Gravitational and Kinetic Energy Review (GE Notes)

What is energy?

• The capacity of doing work.

• The electricity supplied by Eskom.

• The calories in the food that we eat.

• The ability to jump up and down.

Tags

NGSS.MS-PS3-4

What is the unit for mass?

• kilogram (kg)

• meter (m)

• Newton (N)

• Joule (J)

Kinetic energy is said to be the energy of ...

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

A student creates a ramp by stacking four blocks and then leaning a meter stick against it. She releases four different balls from the same position on the ramp and calculates their speeds. Based on the information in the table below, which ball would you predict to have the LEAST kinetic energy when it reaches the end of the ramp?

• Golf

• Tennis

• Baseball

• Softball

Tags

NGSS.MS-PS3-1

A student creates a ramp by stacking four blocks and then leaning a meter stick against it. She releases four different balls from the same position on the ramp and calculates their speeds. Based on the information in the table below, which ball would you predict to have the LEAST kinetic energy when it reaches the end of the ramp?

• Golf

• Tennis

• Baseball

• Softball

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Students conduct an experiment using a toy car with the mass of 10g, a toy car with the mass of 20g, and a toy car with the mass of 30g. The students want to test the cars on a ramp and measure how far the cars traveled. Evaluate the information and determine the question they are trying to test with this experiment.

• Does the mass of the object influence the amount of potential energy?

• Does the amount of incline determine how far the car will travel?

• Does the mass of the car influence the amount of kinetic energy?

• Does the height of the ramp influence the amount of potential energy?

Which of the following can be concluded from the graph?

• When speed increases, kinetic energy decreases.

• Kinetic energy does NOT depend upon speed.

• Speed has a small effect on the amount of kinetic energy.

• Speed has a big effect on kinetic energy.

Tags

NGSS.MS-PS3-1

The image below shows four soccer balls at different locations on an uneven soccer field. Which ball has the greatest amount of KINETIC energy?

• Ball A

• Ball B

• Ball C

• Ball D

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Where does this roller coaster have the MOST KINETIC energy?

• A

• B

• C

• D

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

When Gabriel sleds down this hill, when is his Kinetic Energy the LEAST?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS3-1