Calculating Energy and Work

It takes 20 N of force to move a box a distance of 10 m. How much work is done on the box in Joules?

• 200 J

• 20.0 J

• 100 J

• 10 J

Two factors that determine work are

• size of the force, and distance
• size of the force, and type of force
• mass, and distance

units for work are

• netwons
• joules
• meters
• seconds

if you push a cart with a force of 60 N for 2 m... how much work have you done?

• 120 J

• 30 J

• 120 N

• 30 N

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-5

Work done = Force x __?__

• a. distance

• b. acceleration

• c. velocity

• d. speed

You apply a force of 18 N to a dresser and move it 3.0 m. How much work did you do on the dresser?

• 54 J

• 6.0 J

• 21 J

• 27 J

I do 132 Joules of work on a bookcase. If I apply a force of 6 Newtons, how far have I moved the bookcase?

• 22 meters

• 792 meters

• 17 meters

• 320 meters

Calculate the work needed to raise a 3 kg cat up to a height of
4 m.

• 12 J
• 0 J
• 120 J
• 1.22 J

Tags

NGSS.MS-PS3-2

What is the work done when a 20-N force pushes a cart 3.5 m?

• 70J
• 6.8J
• 23.5J
• 17.5J

 The law of conservation of energy states that when one form of energy is converted into another,

• Energy is destroyed in the process
• Energy is created in the process
• No energy is destroyed in the process
• Energy is lost in the process

Tags

NGSS.HS-PS3-3