Question

A shopper does 157 J of work pushing a shopping cart with a 10.9 N force...

A shopper does 157 J of work pushing a shopping cart with a 10.9 N force directed along the handle at a -35.0°. How did he push the cart?

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Assuming that the question reads "How FAR did he push the cart"

Work done is displacement multiplied by that component of force which is in the same direction as the displacement.

Here the angle between force and displacement is . The component of force in the direction of displacement will be

Let the displacement of the cart be .

Then,

Here,

He pushed the cart a distance of 17.6 meters.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A shopper in a supermarket pushes a cart with a force of 40 N directed at...
A shopper in a supermarket pushes a cart with a force of 40 N directed at an angle of 25° below the horizontal. The force is just sufficient to overcome various frictional forces, so the cart moves at constant speed. (a) Find the work done by the shopper as she moves down a 35.0-m length aisle. ____ Joules (b) What is the net work done on the cart? ____ Joules Why? (c) The shopper goes down the next aisle, pushing...
A person pushes a 16.0-kg shopping cart at a constant velocity for a distance of 16.0...
A person pushes a 16.0-kg shopping cart at a constant velocity for a distance of 16.0 m. She pushes in a direction 21.0° below the horizontal. A 46.0-N frictional force opposes the motion of the cart. (a) What is the magnitude of the force that the shopper exerts? ____N (b) Determine the work done by the pushing force. ____ J (c) Determine the work done by the frictional force. ____ J (d) Determine the work done by the gravitational force....
A person pushes a 20.3-kg shopping cart at a constant velocity for a distance of 36.2...
A person pushes a 20.3-kg shopping cart at a constant velocity for a distance of 36.2 m on a flat horizontal surface. She pushes in a direction 25.1 ° below the horizontal. A 44.5-N frictional force opposes the motion of the cart. (a) What is the magnitude of the force that the shopper exerts? Determine the work done by (b) the pushing force, (c) the frictional force, and (d) the gravitational force.
A person pushes a 24.6-kg shopping cart at a constant velocity for a distance of 21.1...
A person pushes a 24.6-kg shopping cart at a constant velocity for a distance of 21.1 m on a flat horizontal surface. She pushes in a direction 33.6 ° below the horizontal. A 32.4-N frictional force opposes the motion of the cart. (a) What is the magnitude of the force that the shopper exerts? Determine the work done by (b) the pushing force, (c) the frictional force, and (d) the gravitational force.
A person pushes a 11.2-kg shopping cart at a constant velocity for a distance of 15.9...
A person pushes a 11.2-kg shopping cart at a constant velocity for a distance of 15.9 m on a flat horizontal surface. She pushes in a direction 30.5 ° below the horizontal. A 31.2-N frictional force opposes the motion of the cart. (a) What is the magnitude of the force that the shopper exerts? Determine the work done by (b) the pushing force, (c) the frictional force, and (d) the gravitational force.
A person applies 3 N of force to a shopping cart. The cart's momentum changes by...
A person applies 3 N of force to a shopping cart. The cart's momentum changes by 6 kgm/s. Under what conditions does the person's momentum change by the same amount? a) All conditions, this is the physical law b) If there is much fricition between the person and the floor c) If the person is much heavier than the cart d) If all forces on the person are negligible except for that applied by the cart.
-How does the work change as you increase the applied force? Find the acceleration of the...
-How does the work change as you increase the applied force? Find the acceleration of the cart from your measurements. Is there a pattern concerning the work done by the force and the acceleration of the cart? For each run the cart started from rest. You can calculate from the equations of motion the final speed of the cart. It is given by the expression - final speed =square root ( 2 x acceleration x distance) Mass (kg) Force (N)...
1. A force with a magnitude of 43.0 N and directed at an angle of 33.0°...
1. A force with a magnitude of 43.0 N and directed at an angle of 33.0° above the horizontal is used to move a 34.0-kg crate along a horizontal surface at constant velocity. How much work is done by this force in moving the crate a distance of 17.0m? 2.How much joules of energy is needed to change the speed of a 1,600 kg sport utility vehicle from 10.0 m/s to 40.0 m/s? 3.70.0 J of work is needed to...
A young man in good physical shape finds that his car is out of gas and...
A young man in good physical shape finds that his car is out of gas and 1 mile from a gas station. He decides to push the car to the gas station. The force of rolling friction against the car is 50 lbs which is about 225 N.   He will push with this much force all the way to the gas station. The air drag force is negligible since the speed of the car through the air will be very...
1) A force of 210 N is needed to push a table across a level classroom...
1) A force of 210 N is needed to push a table across a level classroom floor for a distance of 2.8 m. How much work was done on the table? 2) Use g = 9.8 m/s2. If 4,090 J of work is used to raise a 118 kg crate to a shelf in a warehouse, how high was the crate raised? 3) Use g = 9.8 m/s2. A 66.2 kg student runs up a 5.25 m high stairway in...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT