Question

the velocity of a mass 250g changes to 10m/s to 40m/s in distance of 20m find force acting

Answer 1

u=10
v=40
s=20

v^2-u^2=2as
(40)^2-(10)^2=2×a×20
1600-100=2a×20
1500/20=2a
750=2a
a=375m/s^2

Force=ma
=250g×375m/s^2
=1/4kg×375m/s^2
=93.75kgm/s^2