Time remaining:
How far is the motorcycle from the car when it reaches this speed?

Physics
Tutor: None Selected Time limit: 1 Day

a car is traveling at a steady 72 km/h in a 50km/h zone. a police motorcycle takes off at the instant the car passes it, accelerating at a steady 8.1m/s^2. How much time elapses before the motorcycle is moving as fast as the car?

Sep 11th, 2014

Police moves with acceleration a=8.1m/s^2
Speed of the motorcycle is v=a*t
Solving v=a*t=72m/s for t we get

8.1 *t = 72
t=72/8.1 =80/9 s ~8.889 s

Sep 11th, 2014

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Sep 11th, 2014
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Sep 11th, 2014
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