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A wrecking ball has a mass of 315 kg. If it is moving at a speed of 5.12 m/s, what is its kinetic energy?


*Please I need a clear explanation so i can complete the rest on my own*

Respuesta :

The formula for Kinetic energy is:
KE (Kinetic Energy) = 1/2 M (mass) x V (velocity) ^2

Substitute the known values into the equation:
KE = 1/2 (315) x (5.12)^2

Find out the values in sections (split the formula in half)
1/2 x 315 = 157.5
5.12^2 = 26.2144

Now times the answers together to complete the formula.
157.5 x 26.2144 = 4,128.768 km^2/s

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