Unit 3 (Ch.2) Motion

Which graph best matches a person sitting on a bench and waiting?

• A

• B

• C

• D

Which graph best matches a person walking away at a constant speed forward?

• A

• B

• C

• D

Tags

NGSS.MS-PS3-1

Which graph best matches a person walking away slowing and returning quickly?

• A

• B

• C

• D

Tags

NGSS.MS-PS3-1

Which person below is moving the fastest?

• A

• B

• C

• D

A duck flies west for 60 meters in 10 seconds . What is the duck's speed?

• 6 m/s

• 1.67 m/s

• 60 m/s

• 6 m/s west

A beetle crawls 2 cm/minute for ten minutes. How far did it crawl? be aware of units.. you need to convert cm to m!

• .002 m

• 20 m

• 5 m

• .2 m

Answer explanation

2 * 10 = 20 cm then move decimal 2 to the LEFT

so you get .2

What is the final velocity of a car that accelerates from rest at 9.0 m/s² for 8.0 s?

• 17 m/s

• 72 m/s

• 1.125 m/s

• 0.89 m/s

Tags

NGSS.HS-PS2-1

A pitcher throws a ball at 40.0 m/s and the ball is electronically timed to arrive at home plate 0.4625 s later. What is the distance from the pitcher to the home plate?

• 18.5 m

• 86.5 m

• 0.0116 m

• 86.485 m

What is a sprinter's speed if a distance of 200.0 m is covered in 21.4 s?

• 179 m/s

• 9.35 m/s

• 0.107 m/s

• .93454944 m/s

A car with an initial velocity of 88.0 ft/s is able to come to a stop over a distance of 100.0 ft when the brakes are applied. If they decelerate at -9.8 ft/s², how much time was required for the stopping process

• 8.62 s

• .111 s

• 8.98 s

• Need more information to answer.

Tags

NGSS.HS-PS2-1