Answer to Question #265846 in Atomic and Nuclear Physics for auuuu

Atomic and Nuclear Physics

Question #265846

A stone is thrown downward at 30 m/s. What is its speed, [2]

a)after 1s b) after 2s

Expert's answer

v=u+at

a=9.81

u=30 m/s

a) t=1 s

"v=30 + 9.81 \\times 1 = 39.81\\; m\/s"

b) t= 2 s

"v= 30 + 9.81 \\times 2 = 49.62\\; m\/s"

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