Energy Review

What is the change of GPE for a 5.0 kg object which is raised from the floor to a final height of 2.0m above the floor?

• 10 J

• 49 J

• 98 J

• 190 J

Tags

NGSS.MS-PS3-2

As an object falls downward, it's GPE is always:

• Increases

• Decreases

• Stays the same

• Moves higher and lower

Tags

NGSS.MS-PS3-2

What is the change of GPE for a 8.0 kg object which is lowered from an initial height of 2.0 m above the floor to a final height of 1.5m above the floor?

• -77 J

• -39 J

• -4.5 J

• 15 J

Tags

NGSS.MS-PS3-2

What is the change in height of a .50 kg object which lost 20 J of GPE

• -4.1 m

• 8.2 m

• 24 m

• 4.1 m

Tags

NGSS.MS-PS3-2

As an object falls, its KE always:

• decreases

• increases

• stays the same

• changes direction

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

A ball falls from the top of a building to the ground below. How does the kinetic energy (KE) compare to the potential energy (PE) at the top of the building?

• KE = PE

• KE > PE

• KE< PE

• Can't tell because change is not constant

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

What is the kinetic energy of a 12 kg object with a velocity of 10 m/s?

• 12 J

• 60 J

• 120 J

• 600 J

Tags

NGSS.MS-PS3-1

A 10 kg object has 100 j of kinetic energy. What's its velocity?

• 1.1 m/s

• 3.7 m/s

• 4.5 m/s

• 8.7 m/s

Tags

NGSS.MS-PS3-1

IF the speed of a car is halved, the KE of the car is:

• quadrupled

• quartered

• halved

• doubled

Tags

NGSS.MS-PS3-1

This data table lists mass and speed for four objects. Which two have the same KE?

• A and D

• B and D

• A and C

• B and C

Tags

NGSS.MS-PS3-1