Question

A body has a mass of 25g and momentum of 0.04kgms. Find its kinetic energy

Answer 1

5000 j
1)2*400*25
convert .04 kg into 400 gram and then use the formula

Answer 2

p=mv

v=4*1000/(100*25)
v=.4 m/s

k.e=1/2(mv2)
put all value
and is ..002joule