Question

A car starting from rest acquires velocity of 45m/s in 9s.Calculate its acceleration .If force applied on car be 700N calculate force.


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Answer 1

Answer:

a = 5m/s² and m = 140kg

Explanation:

Given, u = 0 , v = 45 m/s , t = 9s

a = ? F = 700 N. , m = ?

We know that v = u + at

45 = 0 + 9a

9a = 45

a = 5m /s²

Now, F = ma

700 = 5m

m = 700 / 5

m = 140 kg