Question

Find change in velocity of an object of mass 10 kg on acting external force of 5 newton for 20second

Answer 1

F = 5 N
M = 10 kg
a = F/M = 5/10 = 0.5 m /s^2
t = 20 s

Change in velocity = at = 20×0.5 = 10 m/s

Answer 2

m=10kg

f=5N

t=20sec

f=ma

5=10*a

a=1/2

a=v-u/t

1/2=v-u/20

v-u=1/2*20=10