Question

A ball is thrown vertically upwards with a velocity of 100 m/s. The maximum height reached by the ball is

Answer 1

Answer:

 The answer is 500 meters.

Explanation:

The formula used is: 2gh=Vf (final velocity)  Vi (initial velocity)

As final velocity at the maximum height is zero.So, Vf=0

And the gravity is taken in negative value because the ball is moving against the gravity.So, g=-10m/sec^2

By putting the values the final answer will be 500 meters.

Answer 2

Answer:

u=100m/s(initial velocity)

g=10m/s^2

Now,

v=u+at

0=100-10t(v=0 because at max height velocity becomes zero, and a=-10 because gravity is acting against the direction in which ball is thrown)

10t=100

t=10sec

s=ut-1/2gt^2(where s is distance)

s=100.10-1/2.10.(10)^2

s=1000-1000/2

s=1000-500

s=500m

Hope it helps you.