Physics Test Prep - Accelerated Motion

The graph shows the velocity of a bicycle as the rider moves away from a curb. Based on the slope of the graph, what is the average acceleration of the bicycle?

• 6.00 m/s²

• 3.00 m/s²

• 1.33 m/s²

• 0.750 m/s²

A car’s velocity decreases from 22.0 m/s to 10.0 m/s over a period of 3.0 s. What is the car’s average acceleration?

• -4.0 m/s²

• -3.0 m/s²

• 3.0 m/s²

• 4.0 m/s²

If a sprinter accelerates from rest at a constant rate of 2.0 m/s², how fast will she be running after 4.0 s?

• 8.0 m/s

• 4.0 m/s

• 2.0 m/s

• 0.5 m/s

A graph shows position as a function of time for an object moving with constant acceleration. What does the slope of the graph represent?

• acceleration

• displacement

• time

• velocity

A pebble falls from a bridge into the river below. If the pebble falls for 1.20 s, what is its velocity when it hits the water?

• -8.17 m/s

• -8.40 m/s

• -11.0 m/s

• -11.8 m/s

Which graph might represent the acceleration of a jet plane moving down a runway from a rest position?

• Graph 1

• Graph 2

• Graph 3

• Graph 4

Which graph might show the velocity of a ball that is thrown straight up into the air and allowed to fall freely to the ground?

• Graph 1

• Graph 2

• Graph 3

• Graph 4

A car with an initial position of 10.0 m and an initial velocity of 16.0 m/s accelerates at an average rate of 0.50 m/s² for 4.0 s. What is the car’s position after 4.0 s? Hint: x₁ = x + v₁t + (1/2)at²

• 68 m

• 78 m

• 82 m

• 88 m

A racing cyclist is traveling at 19.3 km/h when she speeds up with a constant acceleration of 0.67 m/s². What is her velocity after 5.00 s?

• 3.4 m/s²

• 31 km/h

• 23 km/h

• 140 m/s²