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What’s the velocity of a ball falling with 100 joules of kinetic energy and a mass of 2 kilograms? Use the formula, .
A.
3 m/s
B.
5 m/s
C.
7 m/s
D.
8 m/s
E.
10 m/s

Respuesta :

the answer is 10 m/s

Answer:

10 m/s

Explanation:

K.E. = 100 J

m = 2 kg

Let v be the velocity of ball.

Us ethe formula for kinetic energy

K.E. = 1/2 m v^2

100 = 0.5 x 2 x v^2

100 = v^2

v = 10 m/s

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