Calculating KE and GPE

You serve a volleyball with a mass of 2 kg. The ball leaves your hand with a speed of 30 m/s. What is the KE of the ball?

• 900 J
• 1800 J
• 60 J
• 30 J

Tags

NGSS.HS-PS3-1

There is a bell at the top of a tower that is 45 m high. The bell weighs 100 kg. What is the potential energy of the bell?

• 980 J
• 441 J
• 4,500 J
• 44,100 J

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

NGSS.HS-PS3-1

NGSS.HS-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 

Which of the following has the GREATEST IMPACT on the kinetic energy of an object?

• Mass 
• Velocity
• Height
• The acceleration due to gravity

Tags

NGSS.HS-PS3-2

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

• 8.9 m/s²
• 9.8 m/s²
• It depends on the mass of an object
• Equal to its kinetic energy

A skydiver jumps from a plane and is halfway through her descent. At this point in time she has...

• Kinetic Energy
• Gravitational Potential Energy
• Both Kinetic and Gravitational Potential Energy
• She has no energy

Tags

NGSS.HS-PS3-1

Which of the following has the greatest amount of kinetic energy?

• A small baby running at 15 m/s
• A toddler running at 15 m/s
• Mrs. Rewerts running at 15 m/s
• Arnold Schwarzenegger running at 15 m/s screaming "Get to the choppa!"

Tags

NGSS.HS-PS3-2

What is the correct unit for energy?

• meters (m)

• kilogram meters per second (kg m/s)

• Newtons (N)

• Joules (J)

Tags

NGSS.HS-PS3-4

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