Energy

What type of energy does a stretched rubber band have?

• Potential energy

• Mechanical energy

• Kinetic energy

• Electromagnetic energy

Sound is

• Electromagnetic energy

• Chemical energy

• Mechanical energy

• Thermal energy

A 100 Kg object drops off a cliff. Knowing gravity to be 9.8 m/s2, what is the kinetic energy of the object?

• 9.604 J

• 4,802 J

• 9,604 J

• 4,900 J

When an object is dropped, what happens to potential and kinetic energy as it falls?

• GPE goes down, KE goes down

• GPE goes up, KE goes up

• GPE goes up, KE goes down

• GPE goes down, KE goes up

Green plants convert light energy from the sun into what during photosynthesis.

• Chemical potential energy

• Thermal energy

• Mechanical energy

• Gravitational potential energy

As a car is slowed, most of its kinetic energy is converted by the brakes to:

• Electrical energy

• Thermal energy

• Potential energy

• Chemical energy

Energy is defined as

• Mass x acceleration

• Force x distance moved in the direction of the force

• The ability to do work or cause change

• Mass x force

What is the potential energy of a 50 Kg object that is sitting 3 m above the ground. (GPE = ham)

• 150 J

• 16.67 J

• 179.67 J

• 1,470 J

When a ball is tossed in the air, it will at gain potential energy as it increases in height. What will happen to kinetic energy at that point?

• it will increase

• it will decrease

• it will remain the same

• not enough information is given

Jet fuel has stored energy of what type?

• thermal

• elastic

• mechanical

• chemical