Answer to Question #211647 in Classical Mechanics for Hallelluyah

Classical Mechanics

Question #211647

A body is projected upward with a velocity of 30m/s. Find the time when the velocity will be 5m/s

Expert's answer

Under the influence of gravity, the object decelerates at the rate of 9.8 m/s². So, the time is

"t=\\frac{v_2-v_1}{g}=\\frac{5-30}{-9.8}=2.55\\text{ s}."

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