A ball of mass xg is release from a height of 20m . Calculate the time taken to fall to the ground.

20 = 4.9 t^2

1.A ball is dropped from the height of 20m.calculate

(i) The time taken by the ball to reach the ground.
(ii) The velocity with which the ball strikes the ground.

To calculate the time taken for the ball to fall to the ground, we can use the equation for the time of free fall:

t = √(2h/g)

where:
- t is the time taken to fall
- h is the height from which the ball is released
- g is the acceleration due to gravity (approximately 9.8 m/s^2 on Earth)

Let's substitute the given values into the equation and calculate the time:

h = 20 m
g = 9.8 m/s^2

t = √(2 * 20 / 9.8)

To solve this equation, we need to find the square root of (2 * 20 / 9.8).
Using a calculator, the value of the square root is approximately 2.02 seconds.

Therefore, the time taken for the ball to fall to the ground is approximately 2.02 seconds.