A paratrooper jumps from an aeroplane and opens a parachute after 2 s of free fall and starts deaccelerating with 3 m/s ². At 10 m height from ground, while descending with the help of parachute, the speed of paratrooper is 5 m/s. The initial height of the airplane is _ _ _ m. (g=10 m/s ²)

Kinematics: JEE Main 2026 Physics question

JEE Main 2026 · 23 Jan, Evening shift · Q44

JEE Main 202623 Jan, Evening shiftPhysicsMediumKinematics177× since 2002

A paratrooper jumps from an aeroplane and opens a parachute after 2 s of free fall and starts deaccelerating with 3 m/s

^2

. At 10 m height from ground, while descending with the help of parachute, the speed of paratrooper is 5 m/s. The initial height of the airplane is _______m. (

g=10

m/s

^2

)

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