Question

Two stones of masses m and 2m are projected vertically upwards so as to reach the same height. the ratio of kinetic energies of their projection is​

Answer 1

Answer:

k.e=1/2 mv^2

=1/2

Explanation:

the ratio will be

1/2

Answer 2

Using v raced to 2 -u raced to 2= 2gh, we can conclude that if they reach same height their initial velocity must be same.

So KE will be ratio of their masses i.e.

( KE of m) : ( KE of 2m )

= m : 2m

= 1 : 2