A ball of mass 2 kg and another of mass 4 kg are dropped together from a 60 ft tall building .After a fall of 30 ft each towards earth ,their respective kinetic energies will be in the ratio of |
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a) |
|
b) |
1:4 |
c) |
1:2 |
d) |
1: |
A ball of mass 2 kg and another of mass 4 kg are dropped together from a 60 ft tall building .After a fall of 30 ft each towards earth ,their respective kinetic energies will be in the ratio of |
|||||||
a) |
|
b) |
1:4 |
c) |
1:2 |
d) |
1: |
(c) Kinetic energy As both balls are falling through same height, therefore they possess same velocity. |