Physics WAEC

A body of mass 5kg falls from a height of 10m above the ground. What is the kinetic energy of the body just before it strikes the ground? (Neglect energy losses and take gas 10m/s²)

A. 5J
B. 25J
C. 250J
D. 500J
E. 625J

Correct Answer:

Option D – 500J

Explanation

v² = u² + 2gh = 0 + 2 x 10 x 10
v² = 200; K.E = ½mv² = 1/2 x 5 x 200 = 500J

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5 years ago

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