Answer to Question #164923 in Physics for Jason

Question #164923

A ball of mass 8kg falls from rest from a height of 100m. Neglecting air resistance, calculate its kinetic energy after falling a distance of 30m .(Take g as 10ms^-2)

Expert's answer

"KE=\\Delta PE=mg(h_2-h_1),""KE=8\\ kg\\cdot10\\ \\dfrac{m}{s^2}\\cdot(100\\ m-70\\ m)=2400\\ J."

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