9A Quiz - Conservation of mechanical energy

At which point in the picture must the cart have been moving the fastest?

• Point 1

• Point 2

• Point 3

• They would all be the same

A 1.0 kg ball is stationary at the top of a hill that is 10.0 meters in height. The ball rolls all the way down the hill. What is its gravitational potential energy at the bottom of the hill?

• 0 joules

• 98 joules

• 49 joules

• 38 joules

The sum of the kinetic and potential energy in a system is known as the system's _____________________ energy.

• mechanical

• chemical

• thermal

• combined

At which point in the picture must the cart have been moving the fastest?

• Point 1

• Point 2

• Point 3

• They would all be the same

At which point in the picture must the cart have the most MECHANICAL energy?

• Point 1

• Point 2

• Point 3

• They would all be the same

What does the Law of Conservation of Energy state?

• Energy cannot be created or destroyed

• Nothing can exchange energy

• Energy will increase over time.

• Energy will decrease over time.

Stretched bow and arrow is

Potential or kinetic?

• Kinetic

• Potential

Gravitational potential energy formula_____

Running car is an example of

potential or kinetic energy?

• Potential

• Kinetic

Rearrange the equation for kinetic energy to make mass the subject of the equation.

• m = KE/2v²
• m = 2KE/v²
• m = v²/2KE
• m = 2v²/KE