Unit 1: Motion

What is the average speed of the spacecraft?

• 0.33 kilometers per second

• 3 kilometers per second

• 5 kilometers per second

• a. 12 kilometers per second

3 m/s North is an example of a(n)

• Speed

• Velocity

• Acceleration

1. Which of the velocities listed below represents the fastest speed?

a. 10 m/s N b. 25 m/s N c. -15 m/s N d. -30 m/s N

• 10 m/s N

• 25 m/s N

• -15 m/s N

• -30 m/s N

1. One possible unit of speed is:

• miles per hour

• kilometers per hour

• meters per secon

• All of these are unites of speed

The speed you read on a speedometer is

• Instantaneous Speed

• Constant Speed

• Average Speed

1. Suppose you are in a car that is going around a curve. The speedometer reads a constant 30 miles per hour. Which of the following is true?

• your speed is changing

• your velocity is changing

• you're accelerating

• both b and c are true

The slope of a line on a distance-time graph represents

• distnace

• time

• speed

• displacement

A horizontal line on a distance-time graph means the object is

• moving at a constant speed

• increasing speed

• not moving (at rest)

Pick the graph that represents: a plane flies at a constant speed in the positive direction.

• a

• b

• c

• d

Pick the graph that represents: A toy buggy rests motionless on the table.

• a

• b

• c

• d