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Standard XII

Physics

Relative Velocity

A parachutist...

Question

A parachutist drops ireely from am aeroplanefor 10s before the parachute opens out.Then hc descends with a net rctardation of2.5 m/s2. If hc bails out of the plane at a hcightof 2495 m and g 10 m/s. hit velocity onreaching the ground will be(1)5 m/s (2) 10 m/s (3) 15 m/s (4) 20 m/s:-

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