Motion - Distance/Speed/Acceleration

Jimothy is driving to his Mom's house for Thanksgiving, and he is debating whether or not he needs to stop for gasoline. Which quantity would be most useful in making this decision?

• Orientation

• Distance

• Displacement

• Velocity

Jenny took the photo on the left, and then some time later took the photo on the right. Given that this is the same tree in front of the same mountain, what is the best explanation for the difference?

• The tree moved and the mountain remained stationary.

• The mountain moved and the tree remained stationary.

• Jenny took the photos from within 2 different reference frames.

• Each of the photos used a difference reference point.

Which path has the SMALLEST displacement relative to the START point?

• Path A, ending at A

• Path B, ending at B

• Path C, ending at C

• All 3 paths, ending at A,B, or C, have equal displacement

Velocity differs from speed in that it has:

• direction

• orientation

• displacement

• motion

A car driving in a circle at a constant speed has no overall:

• velocity

• acceleration

• displacement

• orientation

Tammy went on walk and wonders how fast her average walking speed is. What would help her figure this out?

• How far she walked and for how long

• How she long she walked and in what direction

• How much she accelerated and in what direction

• How long she walked and her final displacement

Tags

NGSS.MS-PS3-1

Cooper bikes at an average speed of 9 m/s. What is his acceleration from rest if he reaches average speed in 3 seconds?

• 3 m/s²

• 0.33 m/s²

• -1.3 m/s²

• 2.5 m/s²

Bubba woke up late and is now in a rush. His school is 1 mile away and it usually takes him 12 minutes to walk there. If he has only 3 minutes to get to school today on time, what speed does he need to go?

• Twice as fast

• Four times as fast

• 2.5 times as fast

• 12 times as fast

Which of the following is necessary to describe an object's motion?

• its velocity

• its mass

• a reference point

• its orientation

When a car slows down at a traffic light, it is ________________________________.

• accelerating

• traveling at a constant velocity

• decreasing its displacement

• changing direction