Question

A constant force of 5N acts for5 seconds on a mass of 5Kg at rest. Calculate the final momentum

Answer 1

Final momentum = massx velocity

Force=5N

Mass=5kg

F=m.a

a=1m/sec^2

u=0m/sec

t=5sec

From first equation of motion

v=u +at

v=0+1x5

v=5 m/sec

Final momentum=5x5

=25kgm/sec

Hope it helps!!