A runner of mass 51.8 kg starts from rest and accelerates with a constant acceleration of 1.31 m/s^2 until she reaches a velocit y of 5.47 m/s. She then continues running at this constant velocity. How long does the runner take to travel 165 m?
1 answer:
Answer:32.24 s
Explanation:
Given
mass of runner (m)=51.8 kg
Constant acceleration(a)=
Final velocity (v)=5.47 m/s
Time taken taken to reach 5.47 m/s
v=u+at
Distance traveled during this time is
So remaining distance left to travel with constant velocity=153.57 m
thus time
Total time=28.07+4.17=32.24 s
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