Forces and Energy Review

What is speed? (Hint: example units are meters per second)

• how far you go

• how much distance is covered over a period of time

• how fast you accelerate

• the change in the location of a object

Tags

NGSS.MS-PS3-1

A runner races in the 200 meter dash. It takes her 10 seconds to finish. What is her average speed?

• 20 m/s

• 2000 m/s

• 200 seconds

• 20 seconds

Tags

NGSS.MS-PS3-1

According to the graph how far does the person travel in the first 5 seconds? (Displacement = Distance traveled)

• 2 m

• 10 m

• 0 m

• 5 m

Tags

NGSS.MS-PS3-1

What is the person doing from 5 seconds to 10 seconds? (Displacement = Distance traveled)

• Walking

• Running

• Standing Still

• Walking Fast

At which point is potential energy greatest?

• W
• X
• Y
• Z

Tags

NGSS.MS-PS3-2

The faster an object moves, the ________ kinetic energy it has. 

• more
• less
• none of the above
• same

Tags

NGSS.MS-PS3-1

Gravitational potential energy depends on the ________ and ________ of the object. 

• Height and mass
• Friction and movement
• Mass and Movement
• Height and Friction 

Tags

NGSS.MS-PS3-2

NGSS.MS-PS2-4

What would have the greatest kinetic energy?

• A car driving down a hill.
• A person running down a hill. 
• A ball rolling down a hill. 
• leaves rolling down a hill 

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which is an example of potential energy?

• a roller coaster speeding down a hill
• the pulled back string on an archers's bow
• releasing the strings on a guitar
• an electric current lighting a light bulb

Tags

NGSS.MS-PS3-2

The neighbor's cat ran through your yard. The cat has a mass of 1 kg. He is running at a speed of 2 m/s. What is the kinetic energy of the cat as he runs? KE=1/2 (m)(v^2)

• 4 J

• 3 J

• 1 J

• 2 J

Tags

NGSS.MS-PS3-1