Table of Contents

- 1 How do you find the time a ball reaches maximum height?
- 2 How long does it take the ball to hit the ground?
- 3 What is the maximum height reached by the ball maths?
- 4 How high will the ball be after 3 seconds?
- 5 How do you calculate the velocity of a vertically thrown ball?
- 6 What happens to the velocity of the ball during upward movement?

## How do you find the time a ball reaches maximum height?

We know the value of g in SI is 9.8 m/second square. So just for example, if a ball is thrown vertically upwards with 98 m/s velocity, then to reach the maximum height it will take = 98/9.8 =10 seconds.

### How long does it take the ball to hit the ground?

To decide where the balls land, we need to determine how long the balls are in the air. Both balls will take 2 seconds to hit the ground.

#### What is the maximum height reached by the ball maths?

Answer: 81.6 m. The height reached is the average velocity times this time 4.08 s, with v(avg) = [v(initial) + v(final)] / 2 with v(final) = 0. v(avg) = v(initial) / 2 = 40 m/s / 2 = 20 m/s.

**Does a ball take the same time to go up and down?**

The answer is: Down. Only if there was no air resistance would the up and down times be the same.

**What is the height reached by the ball at 1 second?**

The height reached by the ball after one second is 20m as the speed of the ball is 20m per second and there is no air or wind resistance.

## How high will the ball be after 3 seconds?

150 feet

After 3 seconds, the height of the ball is 150 feet.

### How do you calculate the velocity of a vertically thrown ball?

If a ball is thrown vertically upwards with an initial velocity V0then here is a set of formula for your quick reference. 1) Maximum height reached = H = V02/ (2 g) 2) Velocity at the highest point = 0 3) Time for upward movement = V0/g 4) Time for downward movement = V0/g 5) Total time of travel in air = (2 V0)/g

#### What happens to the velocity of the ball during upward movement?

In other words, during upward movement, the ball is moving with retardation. And finally, the velocity of the ball becomes zero at a height. Then again it starts falling downwards vertically and this time its velocity increases gradually under the influence of gravity.

**How long does it take a ball to reach the ground?**

So the ball needs 2.43 sec to reach the ground from max position upwards. A stone is thrown vertically from the top of a tower with velocity of 5m/s. It reaches the ground after 8 seconds. What is the height of the tower?

**Why is the acceleration of the ball negative in the graph?**

The acceleration is negative because this acceleration is directing downwards while the ball is moving upward. And because of this negative acceleration, the velocity of the ball is gradually decreasing.