Question

A ball is thrown vertically upwards with as veliocity of 10m/s from the balcony of a tall building. The balcony is 15m above the ground &gravitational acceleration is 10m/s square. Find(a) the time requried for the ball to hit the ground,and(b) the veliocity with which it hit the ground.

Answer 1

The time required for the ball to hit the ground is approximately 1.8 seconds. The velocity with which it hits the ground is approximately 28 m/s.

Step-by-step explanation:

To find the time required for the ball to hit the ground, we can use the equation:

h = ut + (1/2)gt^2

where h is the vertical distance, u is the initial velocity, g is the acceleration due to gravity, and t is the time. Substituting the given values, we have:

15 = 10t + (1/2)(10)t^2

After solving the quadratic equation, t is approximately 1.8 seconds.

To find the velocity with which the ball hits the ground, we can use the equation:

v = u + gt

Substituting the given values, we have:

v = 10 + (10)(1.8)

After evaluating, v is approximately 28 m/s.