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- 1. Multiple Choice
What is the rate of acceleration of a mountain bike if it slows down from 9.4 m/s to 3.0 m/s in a time of 3.75 s?
a = vf – vi / t
-0.61 m/s2
-1.71 m/s2
-1.19 m/s2
-2.07 m/s2
- 2. Multiple Choice
A policeman traveling 19.5 m/s spots a speeder ahead, so he accelerates his vehicle at a steady rate of 1.81 m/s2 for 3.2 s, at which time he catches up with the speeder. What distance does the police car cover in that time?
d = vit + ½ at2
35.98 m
56.32 m
71.67 m
91.02 m
- 3. Multiple Choice
A car parked on a hill starts to coast down the hill, accelerating from rest at a constant rate of 0.45 m/s2. How fast will the car be moving after 7.0 s?
vf = vi + at
3.15 m/s
5.07 m/s
6.97.15 m/s
7.81 m/s
- 4. Multiple Choice
An airplane accelerates down a runway from rest at 3.98 m/s2 for 25.9 s until it lifts off the ground. Determine the distance traveled before takeoff.
d = vit + ½ at2
934.0 m
1004.7 m
1184 m
1334.9 m
- 5. Multiple Choice
A ball is dropped from a building. How fast is it traveling after falling for 1.77 s?
vf = vi + at
14.76 m/s
17.35 m/s
18.91 m/s
20.03 m/s
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