A rubber ball is released from a height of 5 m above the floor. It bounces back repeatedly, always rising to 81/100 of the height through which it falls. Find the average speed of the ball. (Take g = 10 ms⁻²)

Kinematics: JEE Main 2021 Physics question

JEE Main 2021 · 17 Mar, Evening shift · Q7860

JEE Main 202117 Mar, Evening shiftPhysicsMediumKinematics177× since 2002

A rubber ball is released from a height of 5 m above the floor. It bounces back repeatedly, always rising to

{{81} \over {100}}

of the height through which it falls. Find the average speed of the ball. (Take g = 10 ms^

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JEE Main 2021 · 17 Mar, Evening shift · Q7860

JEE Main 202117 Mar, Evening shiftPhysicsMediumKinematics177× since 2002

A rubber ball is released from a height of 5 m above the floor. It bounces back repeatedly, always rising to

{{81} \over {100}}

of the height through which it falls. Find the average speed of the ball. (Take g = 10 ms^

-