Question

a car of mass 1000 kilograms develops a force of 500 Newton over a distance of 49 metre if initially the car is at rest find (i) final velocity (ii) time for which it accelerates
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Answer 1

Ans

v=7m/s

t=14s

Explanation:

m=1000kg   F =500N

F=ma

a=500/1000

v2-u2=2as (u=0) given starts with rest

solve it and v =7 m/s

v=u+at

7=0+0.5t

t= 14s