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Motion question

2019 · Shift 2 · Q49
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Motion question

2019 · Shift 2 · Q49

JEE AdvancedPhysicsMotionNumerical+3 / −1
A ball is thrown from ground at an angle θ\thetaθ with horizontal and with an initial speed u0. For the resulting projectile motion, the magnitude of average velocity of the ball up to the point when it hits the ground for the first time is V1. After hitting the ground, the ball rebounds at the same angle θ\thetaθ but with a reduced speed of u0α{{{u_0}} \over \alpha }αu0​​. Its motion continues for a long time as shown in figure. If the magnitude of average velocity of the ball for entire duration of motion is 0.8 V1, the value of α\alphaα is .................. JEE Advanced 2019 Paper 2 Offline Physics - Motion Question 6 English
Numerical answer
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