A stone of mass 0.55 kilograms is released and falls to the ground. Measurements show that the stone has a kinetic energy of 9.8 joules at the point of impact with the ground. What is the stone's velocity when it hits the ground?
A)6.3 METERS/SECOND (B)7.2 meters/second (C)8.1 meters/second (D)9.3 METERS/SECOND

Question

A stone of mass 0.55 kilograms is released and falls to the ground. Measurements show that the stone has a kinetic energy of 9.8 joules at the point of impact with the ground. What is the stone's velocity when it hits the ground?
A)6.3 METERS/SECOND (B)7.2 meters/second (C)8.1 meters/second (D)9.3 METERS/SECOND

anonymous · Answer

@souvik  Puoi aiutarmi CAN YOU HELP ME

souvik · Answer

Puoi aiutarmi= CAN YOU HELP ME? in Italy

anonymous · Answer

YES LOL

souvik · Answer

wow...btw
when the stone is about to hit the ground its all potential energy is converted into kinetic energy...
so $$1/2mv ^{2}=9.8$$
you know the mass...find v

anonymous · Answer

i got it thank you @souvik

souvik · Answer

:)