Velocity and Speed
Displacement VS Distance
Acceleration
Vocabulary 1
Vocabulary 2
100

speed with direction

velocity

100

The change in position of an object.

displacement

100

velocity divided by time

acceleration

100

How an object’s motion appears depending upon a frame of reference.

Relative Motion

100

A quantity with magnitude only, no direction.

Scalar

200

Give one example velocity changes when speed is constant.

The object is slowing down or returning to start.

200

Sally runs the 400m track race, one full loop around the track. What is her displacement?

0m

200

Give an example when acceleration is negative.

The object is slowing down or speeding up as it returns to "home" in the negative direction.

200

A quantity with magnitude and direction.


Vector

200

The distance (d)  an object travels over time (t). S=d/t

Speed

300
How long will it take a car traveling at 40km/h for 25000 km to reach its destination?

2500km/40km per hour= 62.5hours

300
How do distance and displacement differ?

Displacement has direction, distance does not.

300

How can acceleration change when speed stays the same?

The object can change direction.

300

Speed with direction, a vector quantity.

Velocity

300

The final velocity minus the initial velocity divided by time.

Acceleration

400

What is the speed of a car if it travels a distance of 350km in 10 hours?

35km/h

400

Jon travels 3km south, and 4km 3 east to go visit a friend. What is his distance? (Show your work.)

7km

400

What is a roller coaster's acceleration if it takes 2.5s to increase its velocity from resting over a distance of 5m . (You must have your units for acceleration correct and show your work.)

2m/s2

5m/s divided by 2.5s

400

The SI units for speed

m- meters

400

The SI units for velocity

m/s-meters per second

500

What is the velocity of a semi truck if it takes it 25s to come to a complete stop over a distance of 250m?

-10m/s

500

Jon travels 3km south, and 4km 3 east to go visit a friend. What is his displacement? (Show your work and the final direction.)

32 + 42=c2

9+16=25

square root of 25=5km south east

500

Jon hits his brakes in his car to prevent a fender bender. It takes him 10s to slow his car down in 3m. What is his accleration? (Show your work and the correct units for acceleration._

-0.3m/s2 

Work: (-3/10)

500

The SI units for accleration

m/s2 -meters per second squared

500

The SI units for length

m-meters

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