Question

1. What is the importance of universal law of gravitation?


2. A stone is released from the top of a tower of height 19.6 m. Calculate its final velocity just before touching the ground?

​

Answer 1

$\huge{\textbf{{{\color{navy}{៚An}}{\red{sw}}{\pink{er࿐}}{\color{pink}{:}}}}}$

1. Ans. The universal law of gravitation explains several phenomena:

        (i) it explains about the force that binds the earth,

        (ii) the motion of the moon around the earth,

        (iii) the motion of planets around the sun, and

        (iv) the tides due to the moon and the sun.

2. Ans- Ans. Data u = 0 m/s

                v = ?

                h = s = 19.6 m

                g = 9.8 m/s2 (falling down)

                v2 – u2 = 2gs

                v2 – (0)2 = 2 x 9.8 x 19.6

                v = 19.6 m/s

         The final velocity just before touching the ground is 19.6 m/s.

HOPE IT HELPS ♡

Answer 2

Answer:

1. Ans. The universal law of gravitation explains several phenomena:

       (i) it explains about the force that binds the earth,

       (ii) the motion of the moon around the earth,

       (iii) the motion of planets around the sun, and

       (iv) the tides due to the moon and the sun.

2. Ans- Ans. Data u = 0 m/s

               v = ?

               h = s = 19.6 m

               g = 9.8 m/s2 (falling down)

               v2 – u2 = 2gs

               v2 – (0)2 = 2 x 9.8 x 19.6

               v = 19.6 m/s

        The final velocity just before touching the ground is 19.6 m/s.

HOPE IT HELPS ♡

Read more on Brainly.in - https://brainly.in/question/49616534#readmore

Explanation:

PLS MARK ME AS BRAINLIST.