Question

A force of 5kg wt acting on body changes its velocity uniformly from 0.2 ms^1 to 10ms ^1 in 20 s. Calculate the mass of body.

Answer 1

Answer:

v=u+gt

10= 0.2+a* 10

g=9.8/10 m per s

now, F= mg

as 5kgwt= 5*9.8 kg

so, 5*9.8=m*9.8/10

m=50kg