Motion Distance and Displacement

A ping-pong ball rolls forward 6 meters, and bounces backward 3 meters. It traveled a total distance of:

• 9 meters

• 6 meters

• 3 meters

• 0 meters

Sara walks from Point A to Point B. Which is true?

• Distance and displacement are EQUAL

• Distance is less than displacement

Bill runs 400 meters to Andy's house, turns around, and runs 400 meters back home.  What is Bill's distance?

• 0 meters

• 400 meters

• 800 meters

• 1600 meters

Bill runs 400 meters to Andy's house, turns around, and runs 400 meters back home.  What is Bill's displacement?

• 0 meters

• 400 meters

• 800 meters

• 1600 meters

A cross-country skier moves 10 meters eastward, then 14 meters westward, and finally 6 meters eastward.

What is the magnitude and direction of the displacement?

• 30 meters east

• 16 meters east

• 2 meters west

• 2 meters east

Mr. D decided that it was time to get his fat-self in shape so he decided to go and run a mile around the track (4 laps). However, after running just one lap, he collapsed in the same spot he started. What was the displacement?

• 0 mi

• 1/4 mi

• 1/4 mi east

• unknown

A dog walks 12 meters to the east and then turns around and walks 16 meters back to the west.

What is the displacement of the dog?

• 28 meters

• 4 meters

• 4 meters west

• 4 meters east

Vector quantities

• only need a number

• Need a number and direction

• Need arrows

Tags

NGSS.MS-PS2-5

If you walk across town, taking many turns, your displacement is the:

• total distance that you traveled.

• length and direction of a straight line from your starting point to your ending point.

• length in a straight line from your starting point to your ending point.

• direction from your starting point to your ending point.

What is the displacement of the car in Image B?

• 6 km

• 6 km, right

• 4 km

• 2 km, right