Energy Review

At what time is the kinetic energy the greatest?

• 15s
• 40s
• 20s
• 25s

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

A block slides across a surface with friction. As the block slows down, describe the energy of the block/surface.

• Block KE decreases, Surface KE increases.
• Block's KE decreases, block's thermal energy decreases
• Block KE decrease, thermal increase; surface KE increase, ThE decrease
• Block KE decrease; Thermal increase on block and surface

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

NGSS.HS-PS3-4

Based on the velocity time graph what regions show the velocity of the object increasing?

• 1,4,8,10
• 1,5,9
• 2,7
• 1,3,10

Tags

NGSS.HS-PS2-1

Based on the velocity time graph, what regions represent a decrease in kinetic energy?

• 3,4,8
• 3,5,9
• 2,7
• 4,5,8,9

Tags

NGSS.HS-PS3-1

On endless track covered in frictionless ice, if a hockey puck is hit, it will continuously increase in speed forever.

• True
• False

Tags

NGSS.HS-PS2-1

Velocity is an example of a

• Scalar because it has magnitude and direction
• Scalar because it has only magnitude
• Vector because it has magnitude and direction
• Vector because it has only magnitude

A person’s hand pushes a cart. The hand’s chemical potential energy _________while the cart’s kinetic energy ________.

• Decrease, decrease
• Increase, increase
• Decrease, Increase
• Decrease, stays the same

Tags

NGSS.HS-PS3-1

NGSS.HS-PS2-1

Launched cart bumps into the target cart. The launched cart’s kinetic energy _______ and the target cart's KE _______

• Decrease, decrease
• Increase, increase
• Decrease, Increase
• Decrease, stays the same

Tags

NGSS.HS-PS3-1

NGSS.HS-PS2-2

If a cart rolls along a track with friction, its kinetic energy will...

• Increase
• Decrease
• Remain the same

Tags

NGSS.HS-PS3-1

If a cart rolls along a track without friction, its kinetic energy will...

• Increase
• Decrease
• Remain the same

Tags

NGSS.HS-PS3-2