Potential and Kinetic Energy

What is the correct unit for energy?

• meters (m)

• kilogram meters per second (kg m/s)

• Newtons (N)

• Joules (J)

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

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

Tags

NGSS.MS-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? (KE = 1/2mv²)

• 8.5 J

• 45 J

• 7.5 J

• 22.5 J

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

Alice kicks a soccer ball with a mass of 2.1 kg. The ball leaves the ground moving 30 meters per second. What is the kinetic energy of the soccer ball? (KE = 1/2mv²)

• 567 J

• 900 J

• 945 J

• 30 J

Tags

NGSS.MS-PS3-1

If the 0.3 kg marble was moving at 6 m/s at the bottom of the ramp, how much kinetic energy did the marble have? (KE = 1/2mv²)

• 5.4 J

• 1.8 J

• 3 J

• 6 J

Tags

NGSS.MS-PS3-1

If the 1.2 kg basketball rolls at 3 m/s, what is it's kinetic energy? (KE = 1/2mv²)

• 2.7

• 5.4

• 3.6

• 9

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

What would have the greatest kinetic energy?

• A car driving down a hill.
• A person running down a hill. 
• A ball rolling down a hill. 

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which is the best example that something has kinetic energy?

• a. a car parked on a steep hill 
• b. a tennis ball rolling across the court
• c. a picture hanging on the wall 
• d. a piece of coal before it's burned 

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

What two factors affect an object's kinetic energy?

• area and volume

• mass and weight

• weight and height

• mass and speed

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

Increasing an object's mass will increase its kinetic energy.

• true

• false

Tags

NGSS.MS-PS3-1