Ch 3: Accelerated motion

The graph shows the velocity of a bicycle as the rider begins to move from a stop.

Based on the slope of the graph, what is the average acceleration of the bicycle?

• 0.8 m/s² forward

• 1.3 m/s² forward

• 2.0 m/s² forward

• 6.0 m/s² forward

The graph shows the velocity of a bicycle as the rider begins to move from a stop

What does the slope of the graph represent?

• acceleration

• displacement

• time

• velocity

A school bus's velocity decreases from 15 m/s to 5 m/s forwards over a period of 10 s. What is the bus's average acceleration?

• 1 m/s² forward

• 2 m/s² forward

• 1 m/s² backward

• 2 m/s² backward

If a race horse accelerates from rest at a constant rate of 3.5 m/s² north, how long will the horse take to reach a speed of 19 m/s?

• 67 s

• 0.18 s

• 16 s

• 5.4 s

Tags

NGSS.HS-PS2-1

A car with an initial position of 75 m and an initial velocity of 5 m/s accelerates at an average rate of 4 m/s² for 2 s. What is the car's position after 2 s?

• 85 m

• 18 m

• 93 m

• 75 m

A racing cyclist is traveling at 15.3 km/h when she speeds up with a constant forward acceleration. After 5.00 s, her speed is 31.0 km/h. What is her acceleration?

• 3.14 km/h/s forward

• 4.90 km/h/s forward

• 23.2 km/h/s forward

• 27.0 km/h/s forward

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 m/s²

• -3 m/s²

• 4 m/s²

• 3 m/s²

Tags

NGSS.HS-PS2-1

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 m/s

• 4 m/s

• 2 m/s

• 0.5 m/s

Tags

NGSS.HS-PS2-1

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

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:  $x_{f\ }=\ x_{i\ }+\ v_it\ +\frac{1}{2\ }a\ t^2$  

•  68 m

• 78 m

• 82 m

• 88 m