Question

a force acting of 2n acting on a body changes its velocity uniformly from 2mps to 5mpsin 10 sec calculate mass of body.

Answer 1

F-2N
u-2ms
v-5ms
t-10s
F-ma
2=m*v-u/t
2=m*4.8
2/4.8=m
m=0.41kg. Hence the mass is 0.41 kg