A ball is thrown upwards with a speed of 40 m / s . When the speed becomes half of the initial speed, gravity is switched off for next 2 second. After that gravity is again switched on but magnitude o

Question

A ball is thrown upwards with a speed of 40 m / s . When the speed becomes half of the initial speed, gravity is switched off for next 2 second. After that gravity is again switched on but magnitude of gravity is doubled. The total distance travelled by the ball from t = 0 to the time it reaches the maximum height is 55 β . The value of β is

TestHub · Accepted Answer

For vertical motion 2 0 2 = 4 0 2 − 2 × 10 × h 1 ​ ⇒ h 1 ​ = 60 m 0 2 = 2 0 2 − 2 × 20 × h 3 ​ ⇒ h 3 ​ = 10 m 55 β = 60 + 40 + 10 = 110 ⇒ β = 2

Physics - Kinematics Question with Solution | TestHub

Doubts & Discussion