Question

a child drops a ball from a height of 10 metres used that its velocity increases uniformly at the rate of 10 metre per second is the velocity which the ball strikes the ground and be the time taken by the ball to reach the ground

Answer 1

please frame the question in understandable way. or give me values of a, S

Answer 2

Mistakes in the question !

Q = A child drop a ball from a height of 10 m. If its velocity increases uniformly at the rate of 10 m/s². Find the velocity with which the ball strikes the ground and the time taken by the ball to  reach ground.

    ANSWER    

Acceleration(a) = 10 m/s²

Initial Velocity(u) = 0 m/s

Final velocity be 'v' m/s

g = 10 m/s²

Now Using equation of motion:

v² + u² = 2gh

v = √2gh

  = √200

  =  10√2 m s⁻¹

Now, Let the time be 't' sec.

Equation of motion:

h = ut + 1/2gt²

h = 1/2gt²

t = √(2h/g)

t = √2 sec

∴ Velocity = 10√2 m s⁻¹

∴ Time = √2 second