Question

the ball is. thrown vertically upward and returns 8 seconds later find the greatest height reached by the ball and intial velocity of ball​

Answer 1

Answer:

It is given that the ball returns to the ground after 8 seconds , it simply means that the total time of flight is 8 seconds.

We can apply,

T=2u/g

80=2u

u=40 m/s. ANSWER.

now you can apply the formula h=u”2/2g to get the max height reached.

#SSR... ❤

Answer 2

Answer:

greatest height = 40m

Explanation:

initial velocity =0

use formula , h= ut -1/2 gt^2