Achild on a bike stops pedaling and coasts. because he is not pedaling he slows down at a rate of 1 m/s^2. in the 5 seconds after he stops pedaling he travels a distance of 62.5 meters. how fast was the child going initially? *

Explanation:

Let u is the initial speed of the bike. Finally, the bike stops, v = 0

Deceleration of the bike,

Time, t = 5

Distance covered, s = 62.5 m

We need to find the initial speed of the bike. Using third equation of motion as :

u = 11.18 m/s

So, the initial speed of the bike is 11.18 m/s. Hence, this is the required solution.

an energy transformation flow diagram is shown

where is it ?

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