0 A boy fallen freely from a building of height 320 m After 5 second superman jumps downward with initial speed u Such that the

Question

0 A boy fallen freely from a building of height 320 m After 5 second superman jumps downward with initial speed u Such that the boy can be saved The minimum value of u is assume g 10 m s 1 95 1 m s 2 98 3 m s 3 91 6 m s 4 856 m

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