The 89.5kg boulder begins rolling down the 35.2m hill with a speed of 5.43m/s. calculate the kinetic energy

 = 1319.45 Joules

Kinetic energy is the energy possessed by a body in motion;

It is given by the formula; 1/2mv², where m is the mass of the body and v is the velocity.

mass = 89.5 kg and v =5.43 m/s

Therefore;

Kinetic energy = 1/2 × 89.5 × 5.43 ²

                       = 1319.45 Joules

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