Home
Class 9
PHYSICS
A parachutist drops freely from an aero ...

A parachutist drops freely from an aero plane for 10 s before the parachute open out. Then he descends with a net retardation of `2.5 m s^(-2)`. If he bails out of the plane at a height of 2495 m and `g = 10 m s^(-2)`, what is his velocity on reaching the ground?

Text Solution

AI Generated Solution

To solve the problem step by step, we will break it down into parts: ### Step 1: Calculate the velocity of the parachutist after free fall for 10 seconds. The formula to calculate the final velocity (v) after falling freely under gravity is given by: \[ v = u + gt \] where: - \( u = 0 \) (initial velocity, since he drops from rest), - \( g = 10 \, m/s^2 \) (acceleration due to gravity), ...
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • DESCRIPTION OF MOTION

    CENGAGE PHYSICS|Exercise CONSOLIDATED EXERCISE (COMPREHENSION)|7 Videos

  • DESCRIPTION OF MOTION

    CENGAGE PHYSICS|Exercise CONSOLIDATED EXERCISE (MATCH THE COLUMNS)|3 Videos

  • DESCRIPTION OF MOTION

    CENGAGE PHYSICS|Exercise MANDATORY EXERCISE (EXERCISE SET - II)|7 Videos

  • ELASTICITY

    CENGAGE PHYSICS|Exercise OLYMPIAD AND NTSE LEVEL EXERCISES|10 Videos

Similar Questions

Explore conceptually related problems

A parachutist drops freely from an aeroplane for 10 seconds before the parachute opens out. Then he descends with a net retardation of 2 m//s^(2) . His velocity when he reaches the ground is 8 m//s find the height at which he gets out of the aeroplane?

A parrachutist bails out from an aeropane and after dropping through a distance of 40 m opens the parachute and decelerates at 2 ms^(-2) . If he reaches the ground with a speed of 2 ms^(-1) , how lowg he in the air ? At what height did he bail out from the plane ?

Knowledge Check

  • A parachutist drops from an aeroplane for 10s before the parachute opens out. Then he descends with a net retardation of 2.5ms^(-2) . If he bails out of plane at a height of 2495m and g=10ms^(-2) , his velocity on reaching the ground will ve

    A
    `2.5ms^(-1)`
    B
    `7.5ms^(-1)`
    C
    `5ms^(-1)`
    D
    `10ms^(-1)`

  • A parachutist drops first freely form an areophone for 10 s and then his parachut opens out. Now he descends with a net retardtion of 2.5 ms^(-2) If the balil out of the plane at a height of 2495 m and g=10 ms^(-2) , his velocity on reaching the ground will be .

    A
    `5 m s^(-1)`
    B
    `10 ms^(-1)`
    C
    `15 ms^-1)`
    D
    `20 ms^(-1)`

  • A parachutist drops freely from helicopter for 20 s before the parachute opends out. Then he descends with retardation of 40 m/s^2 . The height of the helicopter from the ground level is 2500m. When he drops out, his velocity on reaching the ground will be

    A
    `10 ms^(-1)`
    B
    `10 sqrt 10 ms^(-1)`
    C
    `20 ms^(-1)`
    D
    zero

    • Similar Questions

    Explore conceptually related problems

    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 ?

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

    A body falls freely from a height of 125 m (g=10 m//s^(2)) . After 2 sec gravity ceases to act find time taken by it to reach the ground?

    A parachutist after bailing out falls for 10 s without friction. When the parachute opens he descends with an acceleration of 2 m//s^(2) against his direction and reached the ground with 4 m//s from what height he has dropped himself? (g=10 m//s^(2))

    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 ?

    Home
    Profile