Energy Power and Work Review

What is the kinetic energy of a 9.2 kg book that has a speed of 5.5 m/s?

• .5 J
• 9.2 J
• 25 J
• 140 J

True or False: When the distance an object moves is zero the work done on the object is also zero.  

• True
• False

What is the potential energy of a 50.0 kg barbell that is lifted 5.8 m above the floor?

• 50 J
• 9.81 J
• 2800 J
• 58 J

Tags

NGSS.HS-PS3-2

Belly-Flop Bernie dives from atop a tall flagpole into a swimming pool below. His potential energy at the top is 10,000 J. What is his kinetic energy when his potential energy reduces to 9.7 J?

• 9.81 J
• 10,000 J
• 9.7 J
• 9,990.3 J

Tags

NGSS.HS-PS3-2

What is the work done when a 20 N force pushes a cart 3.5 m?

• 70 J
• 6.8 J
• 23.5 J
• 17.5 

True or False: A 10 N force over a distance of 5 m requires more work than a 20 N force over a distance of 2 m.

• True
• False

True or False: Work is done on an object when a force causes movement of the object.

• True
• False

Kinetic energy is the energy of an object that is due to the object's _____.

• inertia
• motion
• momentum
• position

Tags

NGSS.HS-PS3-2

True or False: Kinetic energy depends on an object's acceleration and mass.

• True
• False

True or False: Gravitational potential energy depends on height from a zero level.

• True
• False

Tags

NGSS.MS-PS3-2