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A body is moving vertically upwards. Its...

A body is moving vertically upwards. Its velocity changes at a constant rate from `50 "m s"^(-1)` to `20 "m s"^(-1)` in 3 s. What is its acceleration ?

Text Solution

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10 m `s^(-2)` The negative sign shows that the velocity decreases with time, so retardation is 10 m `s^(-2)`.
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