Energy Calculations

How much gravitational potential energy does a 100kg (220lb.) skydiver have if they jump from 4000 meters?

• 3920000 J

• 294 J

• 180000 J

• 1225 J

A 6kg cat misjudges a jump and falls 5 meters. How much gravitational potential energy does the cat have? (The cat is fine by the way.)

• 294 J

• 180000 J

• 1225 J

• 3920000 J

A 50kg (100lb) person is running at 7m/s (about 16 mph). How much kinetic energy do they have?

• 1225 J

• 180000 J

• 294 J

• 3920000 J

At which point is potential energy greatest?

• W
• X
• Y
• Z

When a pendulum swings, at which point is kinetic energy highest?

• 1
• 2
• 3
• 4

When a pendulum swings, at which point is potential energy at its greatest?

• 1
• 2
• 3
• 4

Which point has the most potential energy?

• G
• f
• b
• a

A 0.40 kilogram bird is flying at a constant speed of 8.0 m/s. What is the bird's kinetic energy ?

• 3.2 J
• 4.2 J
• 2.0 J
• 12.8 J

A pitcher throws a 0.145 kg baseball at a velocity of 30.0m/s. How much kinetic energy does the ball have?

• 65.35 J
• 87.25 J
• 23.45 J
• 65.25 J

Energy and work are measured in

• kilograms

• meters

• Joules

• m/s