K.E. & P.E. Calculations

Which of the following affects the gravitational potential energy of an object?

• The mass of the object
• The height of the object
• The velocity of the object
• Both the mass and height of the object

Tags

MS-PS3-2

What is the correct unit for energy?

• meters (m)

• kilogram meters per second (kg m/s)

• Newtons (N)

• Joules (J)

Tags

MS-PS3-1

MS-PS3-2

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

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

Tags

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

MS-PS3-1

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?

• 567 J

• 900 J

• 945 J

• 30 J

Tags

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?

• 5.4 J

• 1.8 J

• 3 J

• 6 J

Tags

MS-PS3-1

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

MS-PS3-2

The acceleration of an object due to gravity on Earth is...

• 8.9 m/s

• 9.8 m/s

• It depends on the mass

• 98 m/s

Tags

MS-PS3-2

An 2 kg apple is hanging in a tree, 10 ft off the ground. What is the gravitational potential energy of the apple?

• 19.6 J
• 20 J
• 98 J
• 196 J 

Tags

MS-PS3-2

A car is traveling with a velocity of 40 m/s and has a mass of 1120 kg. What is the KE of the car?

• 22,400 J
• 44,800 J
• 896,000 J
• 1,792,000 J

Tags

MS-PS3-1