Work Power

Use one of these equations to answer this question (W = Fd) and (P = W/t): Toph pushes against the turret with 500 Newtons of Force. It stays in place. How much work has been done?

• 1200 Joules of work

• 500 Joules of work

• No work has been done

• 200,000 Joules of work

Two workers use 100 N of force to move a sofa 2 meters in 2 seconds. How much power is required?

• 100 watts

• 400 watts

• 104 watts

• 50 watts

The ability to do work or cause change:

• work

• energy

• momentum

• power

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A student needs 10 Newtons of force to lift a box to the top of a 2 meter shelf. How much work do they do?

• 12 J

• 8 J

• 20 J

• 5 J

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A worker climbs a ladder and does 8 J of work on a 2 N object. What is the distance they lift the object?

• 18 m

• 4 m

• 10 m

• 6 m

If the mass of the cart is 15kg, how much is the potential energy of the cart?

• 0J

• 1.2J

• 6J

• 58.8J

Tags

NGSS.MS-PS3-2

 Work done = Force x _________

• a. distance

• b. acceleration

• c. velocity

• d. speed

What is the unit used to measure work?

• Joule

• Watt

• Newton

• Pascal

If Work = Force x distance, how much work is done if it takes 20N to move a box 10 meters?

• 0 J

• 2 J

• 20 J

• 200 J

________________ is the rate at which work is done.

• Power

• Work

• Time

• Energy