Question

By what velocity a ball be projected vertically upwards
so that the distance covered in 5th second is twice of that
covered in 6th second ? (g= 10 m/s2)​

Answer 1

Answer:

65m/s

Explanation:

Let u be the initial velocity of the ball. Distance travelled in the nth is given by,

Distance covered in the 5th second is,

(The acceleration due to gravity is opposite to the motion of the ball)