## A bicyclist and a runner are waiting at a red light. When the light turns green they start to speed up and the bicyclist gets to a final sp

Question

A bicyclist and a runner are waiting at a red light. When the light turns green they start to speed up and the bicyclist gets to a final speed of 20 mph in 5 seconds. The runner gets to a final speed of 11 mph in 3 seconds. Which one had the greater acceleration?
the bicyclist or the runner.

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2 weeks 2021-07-19T21:14:46+00:00 1 Answers 4 views 0

The acceleration of bicyclist is greater than that of the runner.

Explanation:

It is given that,

Initial speed of both bicyclist and a runner is 0 as they both are waiting at a red light,

When the light turns green they start to speed up.

Final speed of the bicyclist is 20 mph in 5 seconds

The runner gets to a final speed of 11 mph in 3 seconds.

20 mph = 8.94 m/s

11 mph = 4.91 m/s

Acceleration of bicyclist is :

Acceleration of runner is :

It is clear that the acceleration of bicyclist is greater than that of the runner.