Question

a child drops a ball from a window. The ball strikes the ground in 3.0seconds. What is the velocity if the ball the instant before it hits the ground

Answer 1

Terminal velocity (Maximum velocity) is 9.8 meters a second. m/s.

If you wanted the exact answer, you would need the distance from the window to the ground; and than divide by 3.0. Otherwise, 9.8 meters a second would be your best bet.

Answer 2

`v_f = 29.43 m/s`

Step-by-step explanation:

As we know that the ball is dropped from rest

So here we know acceleration of the object is due to gravity

So we will have

`a = 9.81 m/s^2`

now we have

`v_f = v_i + at`

here we have

`v_i = 0`

`a = 9.81 m/s^2`

`t = 3.0 s`

now from above equation we have

`v_f = 0 + (9.81)(3)`

`v_f = 29.43 m/s`