Motion and Force Review

Which of the following is a unit of speed?

• km/hour

• second

• km

• hour

Which of the following statements describes velocity?

• speed in a given direction

• change in speed

• change in direction

• distance traveled per unit of time

A boat travels at 22 km/hr for 10 hrs, what distance will it travel?

• 220 miles

• 2.2 km

• 220 km

• 22 km

A cyclist completed a 2500 meter stage of a race in 50 s. What was her average speed?

• 1500 m/s

• 500 m/s

• 50 m/s

• 30 m/s

Four runners competing in a 1 km race finish the race with these times:

A 200 s

B 180 s

C 130 s

D 215 s

Identify the runner that finished first.

• A

• B

• C

• D

Figure below shows the distance–time graph for a woman running a mountain marathon.

What was her average speed in km/h?

• 10 km/h

• 5 km/h

• 4.4 km/h

• 0

Which distance-time graph below shows an object at stationary?

• A

• B

• C

• D

The graph shows the journey undertaken by a car. Which equation correctly gives the distance travelled by the car?

• (6.5 x 8.0)/2 = 26 m

• 6.5 x 8.0 = 52 m

• 6.5/8.0 = 0.81 m

• 8.0/6.5 = 1.2 m

Look at the speed–time graph in Figure. Name the sections that represent steady speed.

• A, C, G

• B, D, H

• C, E, G

• F, G, H

An aircraft accelerates from 100 m/s to 300 m/s in 100 s. What is its acceleration?

• 100 / 100 =

  1 m/s^2

• 300 / 100 =

  3 m/s^2

• (300 + 100) / 100 = 4 m/s^2

• (300 - 100) / 100 = 2 m/s^2