Energy Exam Review

A baseball with a mass of 0.15 kg is moving at a speed of 40 m/s. What is the baseball's kinetic energy?

• 120 J

• 542 kg

• 50 m/s

A Viking ship roller coaster at the fair has a mass of 36,000 kg. If at its peak it reaches a height of 20 m off the ground. How much gravitational potential energy does it have?

• 7,056,000 J

• 0.914 m

• 216 J

What is potential energy?

• The stored energy of an object due to its position or condition.

• The energy that an object has due to its motion.

• The energy an object has due to its speed.

• The energy an object has due to its volume.

Which pendulum position has maximum KE?

• 1

• 2

• 3

• 4

Which pendulum position has 50% PE and 50% KE?

• 1

• 2

• 3

• 4

At which point is potential energy greatest?

• W
• X
• Y
• Z

The energy of moving particles is called _____.

• sound energy

• heat or thermal energy

• light energy

• mechanical energy

what is radiation?

• direct touch
• air or liquids
• heat waves/ light waves
• touching the cookies out of the oven

When air is heated, its density ___________.

• increases

• decreases

• remains the same

How much work is being done with 200 N of force over 426 meters?

• 85,200 J
• 45,620 J
• 90,480 J
• 62,329 J