Question

A body travels from rest to an acceleration of 5m /s2.What is its displacement after 4s?
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Answer 1

Answer:

The displacement will be 40m

Explanation:

here s=?,u=0m/s,a=5m/s2,t=4s

now find using s=ut+1/2at2

Answer 2

Answer: 40m

Explanation:

u=0m/s

a=5m/s^2

t=4s

now,

       we have,

s=ut+1/2a(t)^2

  =0*4 +1/2*5*(4)

  =0+ 40

   = 40m