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An arrow is shot vertically upward at a velocity of 50.0 m/s. what was its velocity after 2.00 seconds?

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initial velocity(u)= 50m/s. t=2s. a= -9.8m/s². ( minus because acceleration is in  downward direction). v=u+at. v= 50 - 9.8×2. v= 30.4m/s.

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