Home
Class 11
PHYSICS
A parachutist after bailing out falls 50...

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

Text Solution

Verified by Experts

Velocity after `(50) m` fall, `u_(1)=sqrt(2gh) =sqrt(100) g`
`3^(2)=u_(1)^(2)+2xx(-2)h rArr 9=100g-4h`
`h=(100xx9.8-9)/(4) =242.72=243 m`
Net height `=243=50 =293 m`.
Promotional Banner

Topper's Solved these Questions

  • KINEMATICS-1

    CENGAGE PHYSICS|Exercise Exercise 4.3|15 Videos

  • KINEMATICS-1

    CENGAGE PHYSICS|Exercise Exercise 4.4|16 Videos

  • KINEMATICS-1

    CENGAGE PHYSICS|Exercise Exercise 4.1|17 Videos

  • GRAVITATION

    CENGAGE PHYSICS|Exercise INTEGER_TYPE|1 Videos

  • KINEMATICS-2

    CENGAGE PHYSICS|Exercise Exercise Integer|9 Videos

Similar Questions

Explore conceptually related problems

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 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 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 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?

A parachutist after bailing out falls 52 m without friction. When the parachute opens, she decelerates at 2.1 ms^(-2) & reaches the ground with a speed of 2.9 ms^(-1) . (i) How long has been the parachutist in the air? (ii) At what height did the fall begin?

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 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 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 ?