Energy and Work Calculations

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

Tags

NGSS.HS-PS3-1

Two factors that determine work are

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

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.HS-PS3-1

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

Tags

NGSS.HS-PS3-1

Lilly's cat ran through your yard. The cat has a mass of 5 kg. He is running at a speed of 3 m/s. What is the kinetic energy of the cat as he runs?

• 8.5 J

• 45 J

• 7.5 J

• 22.5 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

Ty lifts a set of 1250kg weights a vertical distance of 2m in a weight lifting contest. What Potential Energy do the weights now possess?

• 12,789 Joules

• 24,500 Joules

• 4,500 Joules

Tags

NGSS.HS-PS3-1

The faster an object moves, the ________ kinetic energy it has. 

• more
• less
• none of the above
• all of the above 

Tags

NGSS.HS-PS3-2

Which point has the most potential energy?

• G
• f
• b
• a

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

Calculate the potential energy of a car with a mass of 2,500 kg that is on a hill 100 meters above sea level. (g = 10 Nkg^-1)

• 250,000 J

• 2,500,000 J

• 25,000,000 J

• 250 J

Tags

NGSS.HS-PS3-1