Question

Plz help me to solve this problem plz. in the attachment,
Answer of this question is,
(I) Maximum Height is 122.5 m.
(II) Total time is 5s + 5s = 10s​

Answer 1

Answer:

Environmental pollution is defined as "the contamination of the physical and biological components of the earth/atmosphere system to such an extent that normal environmental processes are adversely affected." From: Environmental Management, 2017.

Answer 2

_/\_Hello mate__here is your answer--

_________________

v = 0 m/s and

u = 49 m/s

During upward motion, g = − 9.8 m s^−2

Let h be the maximum height attained by the ball.

using

v^2 − u^2 = 2h

⇒ 0^2 − 49^2 = 2(−9.8)ℎ

⇒ ℎ =49×49/ 2×9.8 = 122.5

_______________

Let t be the time taken by the ball to reach the height 122.5 m, then according to the equation of motion

v= u + gt

=>0 = 49 + (−9.8) t

⇒t 9.8 = 49

⇒ t= 49/9.8 = 5 s

But, Time of ascent = Time of descent

Therefore, total time taken by the ball to return

= 5 + 5 = 10

• (1) The maximum height to ball rises = 122.5 m

• (2) The total time ball takes to return to the surface of the earth = 5 + 5 = 10 sec.

I hope it helps you mate✨

:)