Question

A car starts from rest and rolls down the hill with a constant acceleration. It travels a distance of 400m in 20seconds. Find the acceleration. Find the force acting on it if its mass is 1500kg.

Answer 1

Answer:

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Answer 2

Answer:

Initial velocity, u = 0

Distance traveled, s = 400 m

Time is taken, t = 20 s

We know, s = ut + ½ at2

Or, 400 = 0 + ½ a (20)2

Or, a = 2 ms€“2

Now, m = 1/5 MT = 1500 kg, a = 2 ms€“2

Or, F = ma = 1500 — 2 = 3000 N Ans.

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Explanation: