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at an elevation of 100 m from the ground ball is dropped from a balloon which, at the instant ball is released, is ascending with a velocity of 3m/sec. and is being accelerated upward at the rate of 10 m/ sec. when and with what velocity will the ball strike ground?

at an elevation of 100 m from the ground ball is dropped from a balloon which, at the instant ball is released, is ascending with a velocity of 3m/sec. and is being accelerated upward at the rate of 10 m/ sec. when and with what velocity will the ball strike ground?

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Grade:12th pass

1 Answers

ABHIJITHU S
21 Points
5 years ago
S=100m, u=-3m/s ,the stone is in uniform motion as net acceleration is zero.
From ,S=ut +.5t^2, we get t =4.78 s,and
From v=u+at,v=44.8m/s

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