Question

A ball of mass 0.5 kg has 100 of kinetic energy. What
is the speed of the ball?
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Answer 1

Answer:

m = 0.5 kg

K.E. = 100

v = ?

K.E. = 1/2 mv^2

100 = 1/2 (0.5)v^2

v^2 = 100×2/0.5

v^2 = 20×20

v = √400

v = 20 m/s