Question

A body of mass 4 kg initiallay at rest is subjected to a force of 16N. What is the kinetic energy acquired by the body at the end of 10 Sec?

Answer 1

here is ur answer.
hope it helps you.

Answer 2

answer1--f=ma

16=4a

a=4m/s*s

u=0,t=10,v=?

v=u+at

v=0+4*10

v=40m/s

KE=1/2 mv*v

KE=1/2*4*40*40

KE=3200J

answer2---F=ma

16= 2 x a

a= 4m/s2

Now u = 0, v=? a=4, t=10s

v-u=at

v= 40m/s

K= 1/2mv2

K= 1/2 x 4 x 40 x 40

K= 3200 J

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