Jonathan is pushing a 25 kg box with a force of 135 N. The friction opposing the motion is unknown. The overall net force for the box is 70 N. Using this information calculate the magnitude of the frictional force of the box.

Answers

Answer 1

The magnitude of the frictional force of the box is 65 N

From the question given above, the following data were obtained:

Mass (m) = 25 KgForce applied (Fₐ) = 135 NNet force (Fₙ) = 70 NFrictional force (Fբ) =?

The frictional force acting on the box can be obtained as follow:

Fₙ = Fₐ – Fբ

70 = 135 – Fբ

Collect like terms

70 – 135 = – Fբ

–65 = –Fբ

Multiply through by –1

Fբ = 65 N

Thus, the frictional force of the box is 65 N

Learn more on Frictional force: https://brainly.com/question/25767576


Related Questions

The relationship between Acceleration and Mass is described as:
O a. Equal
O b. Directly Proportional
O c. Inversely Proportional
O d. Opposite
O e. None of these

Answers

Explanation:

According to Newton's second law

[tex]\\ \sf{:}\dashrightarrow Force=Mass\times Acceleration [/tex]

[tex]\\ \sf{:}\dashrightarrow Mass=\dfrac{Force}{Acceleration}[/tex]

[tex]\\ \sf{:}\dashrightarrow Mass\propto \dfrac{1}{Acceleration}[/tex]

Option C

If you move two objects with opposite charges apart, what happens to the potential energy between them? Explain your response.

Answers

I have read it in the ncert science book

That any material charged with the same energy they repels each other while if they have opposite energy they attracts each other.

Hope it helps.

Please Mark as brainliest

a)iii) as the wheelbarrow was being pushed, the tyre went over a small stone. Describe and explain how the pressure changes.

Answers

Answer:

it changed because the rock put the pressure all in one spot.

Explanation:

If mason runs a 5 k race at an average speed of 300 m/min how long will it take him to finish

Answers

[tex]\\ \sf\Rrightarrow Speed=\dfrac{Distance}{Time}[/tex]

[tex]\\ \sf\Rrightarrow Time=\dfrac{Distance}{Speed}[/tex]

[tex]\\ \sf\Rrightarrow Time=\dfrac{5000}{300}[/tex]

[tex]\\ \sf\Rrightarrow Time=16.6min[/tex]

Hi, please help! •_•

One workman is measured as having a power of 528W. His weight is 800N. He can develop the same power climbing a ladder, whose rungs are 30cm apart. How many rungs can he climb in 5s?

Answers

Answer:

He can climb 11 rungs

Explanation:

Power = 528W, Force = 800N, Time= 5s Total Distance moved = 30x cm or 0.3x m, where x is the number of rungs he climbed

Power = Work done/time

Work done = Power × time

= 528 × 5

= 2640Joules

Also Work done = Force × total distance moved

Total Distance moved = Work done/force

0.3x = 2640/800

0.3x = 33

x = 3.3/0.3

x = 11

A600kg car is acted force of 1200N starting from rest.how travel in 10 seconds?

Answers

Answer:

x= 100 m

Explanation:

m= 600 kg

t= 10 s

F= 1200N

v0= 0

-----

F=ma

a=F/m

x= (v0)t + (1/2)(a)(t^2)

x= (1/2)(F/m)(t^2)

x= (1/2)(1200/600)(10^2)

x= 100m

A projectile is to be launched at an angle of 30° so that it falls beyond the pond of length 20 meters as shown in the figure.
a) What is the range of values of the initial velocity so that the projectile falls between points M and N?

Answers

Answer: A

Explanation:

I want my points so yea

what is the purpose of the thermal energy tranfer lab

Answers

Answer:thermal Energy Transfer in Mixtures Purpose: The purpose of this experiment is to discover how exactly the final temperature of a mixture, involving a substance and hot water, is affected and impacted by the type of substance used. This means that when hot water is mixed with another substance, it must be determined

Explanation:

did this on edge

The force of gravity can also be referred to as the force of _____________.

Answers

Answer:

Gravitational.

Explanation:

In Earth, everything have a volume and mass, or downward force of gravity, which Earth's mass exerts on them.

The deceleration of the dummy is less than the deceleration of the passenger compartment.
Explain why this is of benefit for the safety of a passenger.

Answers

Based on the information given, this is beneficial because the passenger is less likely to be injured.

Deceleration simply means acceleration in a reverse way. Deceleration simply means the rate at which an object slows down.

From the complete information, it should be noted that the fact that the deceleration of the dummy is less than the deceleration of the passenger compartment is beneficial as it impacts on passenger or dummy less than without the airbag or seat belt.

Therefore, this is important as the passenger is less likely to be injured.

Learn about deceleration on:

https://brainly.com/question/75351

A weightlifter lifts a 350 N set of weights over his head a vertical distance of 2.5 meters above the floor. Calculate the work the athlete does on the weights, assuming he lifts them at a constant speed.

A. 525 J

B. 750 J

C. 1005 J

D. 700 N•m

E. 875 J

Answers

Answer: D) 700 N•m

Answer: Took that test already
The answer is E! I use a calculator and I did 350 divided by 2.5 and the answer was 875!!

Give 4 facts about the alkali metals

Answers

Answer:

there very old

Explanation:

In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.2 106 m/s.
Find the central force acting on the electron as it revolves in a circular orbit of radius 4.63 x 10-11 m.
Answer in units of N.

Answers

The central force acting on the electron as it revolves in a circular orbit is [tex]9.52 \times 10^{-8} \ N[/tex].

The given parameters;

speed of electron, v = 2.2 x 10⁶ m/sradius of the circle, r = 4.63 x 10⁻¹¹ m

The central force acting on the electron as it revolves in a circular orbit is calculated as follows;

[tex]F = \frac{M_e v^2}{r} \\\\[/tex]

where;

[tex]M_e[/tex] is mass of electron = 9.11 x 10⁻³¹ kg

[tex]F = \frac{(9.11 \times 10^{-31}) \times(2.2\times 10^6)^2 }{4.63 \times 10^{-11}} \\\\F = 9.52 \times 10^{-8} \ N[/tex]

Thus, the central force acting on the electron as it revolves in a circular orbit is [tex]9.52 \times 10^{-8} \ N[/tex].

Learn more about centripetal force here:https://brainly.com/question/20905151

3. Which is not an example of energy
(5 Points)
light

thermal

heat

chemical

Answers

Answer:

Heat, Chemical

Answer:

heat is not an energy is a process.

Explanation:

A position versus time graph is shown:
Position vs. Time
1 15
10
10
Time (seconds) ->
Which statement accurately describes the motion of the object in the graph above?
O It is at rest for 3 seconds before moving at constant speed for 10 seconds.
It is at rest for 3 seconds before moving at constant speed for 4 seconds.
Olt is moving from 0 cm to 5 cm at constant speed of 7 cm/s.
O it is moving from 0 cm to 3 cm at a constant speed of 3 cm/s.

Answers

Answer:    Answer: The object moves forward at 5 m/s, stops, and then changes velocity.

Explanation:

With the information given in the question we can graph the points (image attached).

As we can observe, in the first segment of the graph the velocity is increasing linearly (at a constant rate) and is 5 m/s, then in the second segment we can see the position of the object remains the same from second 2 to second 4, which means the object is stopped.

Finally, in the third and last segment, we can observe a change in velocity (at a negative constant rate, because is decreasing), which is decreasing until the object stops.

Explanation:

if clarisses mass on earth is 52kg what would be her weight on venus if the acceleration due to gravity on that planet is 8.87 m/s^2

Answers

Answer:

Weight=F=MA=52*8.87=461.24

a 25 kg crate is pushed horizontally with a force of 70N. if the coefficient of friction is .20, calculate the acceleration of the crate.

Answers

From Newton's second law of motion, the acceleration of the crate is 0.84m/[tex]s^{2}[/tex]

Given that a 25 kg crate is pushed horizontally with a force of 70N and the coefficient of friction is 0.20

To calculate the acceleration of the crate, We will consider the net force acting on the crate. The net force will be sum of the applied force F and the frictional force [tex]F_{r}[/tex].

Let us first calculate the frictional force [tex]F_{r}[/tex]. That is,

[tex]F_{r}[/tex] =- μN

[tex]F_{r}[/tex] = μmg

[tex]F_{r}[/tex] = 0.2 x 25 x 9.8

[tex]F_{r}[/tex] = 49N

Using Newton's second law,

F = ma

F - [tex]F_{r}[/tex] = ma

70 - 49 =  25 a

21 = 25a

a = 21 / 25

a = 0.84 m/[tex]s^{2}[/tex]

Therefore, the acceleration of the crate is 0.84m/[tex]s^{2}[/tex]

Learn more here: https://brainly.com/question/1141170

The force involved in falling of an apple from a tree is known as? (a) Magnetic force (b) electrostatic force (c) Contact force (d) gravitational force​

Answers

Answer:

gravitational force

...........

If a planet has an eccentricity of 0.92 and a distance of the major axis is 5,000,000 km, then what is the distance between foci?(1 point)

460,000,000 km
0.00000018 km
4,600,000 km
5,000,000 km

Answers

Answer:

it’s the third option: 4,600,000 km

Explanation:

just took the test and that was correct

please help answer the question in the image!!!

Answers

Answer:

  C (only)

Explanation:

Often, we consider the 0 position on a graph like this to be the starting point. However, the position on this graph is indicated as positive at time = 0. The motion shown can be described in each stage as follows.

A: moving away from the starting position toward the reference position (position = 0)

B: stationary at the reference position

C: moving away from the reference position toward the starting position

D: stationary at a point just short of the starting position

E: moving away from the starting position toward, then beyond, the reference position

The basic SI unit of length is

Answers

Answer:

m

Explanation:

Metres, m, is the SI unit of length

Hope this helped you-have a good day bro cya)

You roll a toy car, and it moves 10 meters in five seconds. What is the car's velocity?

Answers

Displacement = 10 mTime = 5 sWe know,[tex]velocity \: \: = \frac{displacement}{time} \\ [/tex]Therefore, the car's velocity[tex] = \frac{10}{5} m/s \\ = 2m/s[/tex]Answer:

The car's velocity is 2 m/s.

Hope you could get an idea from here.

Doubt clarification - use comment section.

The mass of a water skier is 54 kg. Calculate his/her weight if the gravitational field strength is 10 N/kg.

Answers

Answer:

weight=mass×gravity

the mass in this question is 54kg and the gravity is 10

therefore:

w=54×10

=540N

I hope this helps

What net force is needed to increase the velocity of a 5 kg object by 3 m/s over the course of 2.5 seconds?

Answers

Hi there!

Recall Newton's Second Law:

[tex]\large\boxed{\Sigma F = ma}[/tex]

∑F = net force (N)

m = mass (kg)

a = acceleration (m/s²)

We must begin by solving for the acceleration using the following:

a = Δv/t

In this instance:

Δv = 3 m/s

t = 2.5 sec

a = 3/2.5 = 1.2 m/s²

Now, plug this value along with the mass into the equation for net force:

[tex]\Sigma F = 5(1.2) = \boxed{6 N}}[/tex]

Answer:

[tex]\boxed {\boxed {\sf 6 \ Newtons}}[/tex]

Explanation:

According to Newton's Second Law of Motion, force is the product of mass and acceleration. The mass of the object is 5 kilograms, but the acceleration is unknown.

We can find acceleration using the following formula:

[tex]a= \frac{ \Delta v}{t}[/tex]

The velocity of the object increases by 3 meters per second. It accelerates in 2.5 seconds.

Δv= 3 m/s t= 2.5 s

Substitute the values into the formula.

[tex]a= \frac{3 \ m/s}{2.5 \ s}[/tex]

[tex]a= 1.2 \ m/s/s = 1.2 \ m/s^2[/tex]

Now we know the mass and acceleration.

m= 5 kg a= 1.2 m/s²

Substitute the values into the force formula.

[tex]F=ma[/tex]

[tex]F= (5 \ kg)(1.2 \ m/s^2)[/tex]

[tex]F= 6 \ kg*m/s^2[/tex]

Convert the units. 1 kilogram meter per second squared is equal to 1 Newton. Our answer of 6 kilogram meters per second squared is equal to 6 Newtons.

[tex]F= 6 \ N[/tex]

2 questions, 100 points

Gravitational force between objects ____________ as objects move farther apart, and it is ___________ between objects that are closer together.
increases, weaker
increases, stronger
decreases, weaker
decreases, stronger

In science, weight is measure in

Pounds
Kelvin
Newtons
Liters

Answers

1. Is decreases, stronger
2. Pounds

Answer:

decreases, stronger

newtons

Explanation:

Consider a car of mass m moving with an initial speed Vo on a straight, flat road. At time t=0, the driver fully applies the breaks to avoid colliding with debris in the road in front of the car. The car’s wheels lock, causing the car to slide on the roadway until the car stops, before running over the debris. The distance that the car slides is D. The coefficient of kinetic friction between the car’s tires and the roadway is a constant value of Uk.

A) Sketch a free body diagram for the car sliding to rest and write Fnet equations

A) does the value D increase or decrease with increasing initial speed?

B) does the value D increase or decrease with increasing the coefficient of friction?

C) derive an equation for the acceleration of the car in terms of Uk and physical consonants

Answers

the answer is B :)))

1. Taking accurate measurements of small values using the ‘measure many and average’ method.
Each oscillation takes a small amount of time, and your reaction time is about 0.1 seconds. This means too much of the time you measure is your reaction time. Find out the percentage error with this calculation;
a. ((reaction time)⁄(time for one oscillation))x100=% error
b. To reduce the percentage error, time for ten oscillations.
c. Take the average time by dividing your answer by ten.
d. Your reaction time is still the same, 0.1 s. Find out the new percentage error with this calculation;

Answers

Answer:

i need free answers here

Explanation:

what was stored when you bent the ruler in your left hand?

Answers

Answer:

potential energy

the name comes from the fact that the ruler has "potential" to act

Explanation:

Explanation:

The deformation of the ruler creates a force in the opposite direction, known as a restoring force.

I'm not sure if it's correct...

the image in figure 16.36 combines observations made with visible light and radio telescopes. which color in the image represents the radio emission?

Answers

Answer: pinkish- white

Purple

Explanation:

11. A tennis ball is thrown straight up in the air, leaving the person's hand with an initial velocity of 3.0 m/s, as shown to the right. What is the displacement of the ball above the person's hand?​

Answers

Answer:

0.46m

Explanation:

Other Questions
For there lay The Combs-the set of combs, side and back, that Della had worshipped long in a Broadway window. Beautiful combs, pure tortoise shell, with jewelled rims-just the shade to wear in the beautiful vanished hair. They were expensive combs, she knew, and her heart had simply craved and yearned over them without the least hope of possession. And now, they were hers, but the tresses that should have adorned the coveted adornments were gone. But she hugged them to her bosom, and at length she was able to look up with dim eyes and a smile and say: "My hair grows so fast, Jim! And them Della leaped up like a little singed cat and cried, "Oh, oh!" Jim had not yet seen his beautiful present. She held it out to him eagerly upon her open palm. The dull precious metal seemed to flash with a reflection of her bright and ardent spirit."Isn't it a dandy, Jim? I hunted all over town to find it. You'll have to look at the time a hundred times a day now. Give me your watch. I want to see how it looks on it." Instead of obeying, Jim tumbled down on the couch and put his hands under the back of his head and smiled. "Della," said he, "let's put our Christmas presents away and keep 'em a while. They're too nice to use just at present. I sold the watch to get the money to buy your combs. And now suppose you put the chops on." What is the purpose of the author's description of the beauty of the combs? O The author is emphasizing the sense of loss that Della must feel when she realizes she can't use them. Find the required angular speed, , of an ultracentrifuge for the radial acceleration of a point 1.60 cm from the axis to equal 300000 g (where g is the acceleration due to gravity).Express your answer numerically in revolutions per minute. A football team has a net yardage of 30 1 3 yards on a series of plays. The team needs a net yardage of 10 yards to get a first down. How many yards do they have to get on their next play to get a first down? Can sunlight change the distribution of traits in a population?. Arrange the following numbers in increasing order.2.3, 45.1, 18.735, 0.9862, 7 Are the ratios 2:1 and 17:7 equivalent? economics question: should we place as much value on GDP as we do or should we look elsewhere? A recipe calls for 1.25 cups of brown sugar to make a batchof cookies. How many cups of brown sugar are needed for5 batches of cookies? Find the equation of the line passing through the points (4, 2) and (6,10). y = [ ? ]x + [ ] Which explanation could be used to verify weather the functions are inverse Parallel lines : mastery test 35 devide 28 with decimals pls help I need help This is an image of the ...........................Topology.if answer Correct i will mark the first person brainly. why are arm circles considered a dangerous stretching exercise? The number of football games with a score less than or equal to 29 is equal to half the number of basketball games with a score greater than or equal to .For both sports, if the only games won were those with scores of 30 or higher, how many more basketball games were won compared to football games won? What is the difference between the total maximum possible points scored by the basketball team last year and the total maximum possible points scored by the football team last year? points How many days are in 52 weeks? The MSDS for propane gives it a health rating of 1, a flammability rating of 4, and a reactivity rating of 0. According to the MSDS, which best describes propane? highly corrosive highly toxic highly flammable highly reactive. In order to create a charged object, you need to ________. The oversized paintings of ________, modeled on comic-book cartoons, bring attention to familiar clichs and stereotypes of popular entertainment. a homeostatic control mechanisms are feedback mechanisms