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

• 900

• 900 m

• 900 s

Tags

NGSS.HS-PS3-1

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

Tags

NGSS.HS-PS2-4

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

Energy that is stored (not in use, not moving)

• Kinetic energy

• Mechanical energy

• potential energy

• thermal energy

Tags

NGSS.MS-PS3-2

Energy due to motion= ____________ energy.

• Potential

• Elastic

• Kinetic

• Friction

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

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

Tags

NGSS.HS-PS2-4

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

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

NGSS.HS-PS2-4

What is the correct unit for energy?

• meters (m)

• kilogram meters per second (kg m/s)

• Newtons (N)

• Joules (J)

What is the equation for calculating gravitational potential energy

• mv

• 1/2 mv^2

• mgh

• Ft