# Question #4f1eb

##### 1 Answer

**Explanation:**

#### Explanation:

We know the ball is thrown upwards in a initial velovity of

So,

When the ball reaches its maximum height, it has a velocity of

So,

Let the maximum height be

The gravitational force that makes the ball slow down till it reaches its maximum height

So,

Now, we have to find the time to reach its maximum height

We have our values

#color(orange)(u=15.8 m/s#

#color(orange)(v=0 m/s#

#color(orange)(a=-9.8 m/s#

We can use one of the Kinematic equations

#color(blue)(v=u+at#

We can use this value to find the maximum height (

#color(brown)(x=ut+1/2at^2#

As height cannot be negative,

Hope this helps! :)