Unit 4H GPB Notes Quiz

States that energy can neither be created nor destroyed; rather, it can only be transformed or transferred from one form to another.

• Kinetic energy Law

• Law of Conservation of Energy

• Potential Energy Law

• Law of Conservation of Momentum

The platform height for Olympic divers is 10 m. A 60 kg diver steps off the platform to begin his dive. a. How much gravitational potential energy does the diver have?

• 588 J

• 600 J

• 5880 J

• 6000 J

The platform height for Olympic divers is 10 m. A 60 kg diver steps off the platform to begin his dive. How much kinetic energy does the diver have as he strikes the water?

• 61 J

• 58

• 2940

• 5880

Forces that cause energy to be converted into forms that cannot be easily regained are

• non-conservative forces

• gravitational forces

• electrostatic forces

• conservative forces

Forces that cause energy to be converted into forms that can be easily regained are

• frictional forces

• air resistance

• non-conservative forces

• conservative forces

A 1 kg ball is held over the edge of a bridge that is 17 m high. Using the acceleration of gravity as 9.8 m/s² , What is the potential energy of the ball?

• 17 J

• 98 J

• 117 J

• 167 J

A 1 kg ball is held over the edge of a bridge that is 17 m high. Using the acceleration of gravity as 9.8 m/s² and the relationship between potential energy prior to dropping and the kinetic energy right before it hits the ground, what is its velocity?

• 18.3 m/s

• 83.5 m/s

• 167 m/s

• 334 m/s

Energy that is associated with position is called

• stationary

• potential

• kinetic

• does not exist

Energy that is associated with motion is called

• stationary

• moving

• potential

• kinetic

If an object falls from a specific height to the ground (ignoring air resistance), what happens to its energy?

• It goes to zero

• It increases increases

• It is destroyed

• It is converted to kinetic energy