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A parachutist after bailing out falls 50...

A parachutist after bailing out falls 50 m ,whitout friction. When the parachute opens he decelerates downwards at `2ms ^(-2)`. He reaches the ground with a speed of `3ms ^(-1)`. How long was the parachustintist in air ? At wht height did he ball out ?

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The correct Answer is:
17. 3 s 292 . 7 m
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A parachutist after bailing out falls 80 m without friction. When the parachute opens, he decelerates downward with 5m//s^(2) and reaches the ground with a speed of 10 m//s . (a) How long is the parachutist in air? (b) At what height did bail out?

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Knowledge Check

  • A parachutist after bailing out falls 80 m without friction. When the parachute opens, it decelerates at 2 m//s^(2) . He reaches the ground with a speed of 20 m//s . At what height, did he bail out?

    A
    180 m
    B
    280 m
    C
    380 m
    D
    480 m

  • A parachutist after bailing out falls 50 m without friction. When parachute opens, it decelerates at 2 m//s^(2) he reaches the ground with a speed of 3 m//s at what height did he bail out ?

    A
    91 m
    B
    182 m
    C
    293 m
    D
    111 m

  • A partachutist after bailing out falls 50 m without friction. When parachute opens, it decelerates at 2 ms^(-2) . At what height did he bail out

    A
    293 m
    B
    111 m
    C
    91 m
    D
    182 m

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    A parachutist after bailing out falls freely for 50 metres. Then his parachute opens and he falls with deceleration of 2ms^-2 When he reaches the ground his speed is reduced to only 3 metres per seconds. at what height did he bail out ? For how long was he in air ?

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