Question

• State the Universal law of gravitation
Answer the following
1. State Newton's third law of motion.
2. Name and state the action and reaction in the following cases:
(a) Firing a bullet from a gun,
(b) Hammering a nail,
(c) A book lying on a table, (d) A moving rocket,
(e) A person moving on the floor,
(1) A moving train colliding with a stationary train.
3. Explain the motion of a rocket with the help of Newton's third law.
4. State Newton's law of gravitation.
5. Write an expression for the gravitational force of attraction
between two bodies of masses m and ma separated by a distancer.
6. Write the numerical value of gravitational constant G with its S.l. unit.
7. Distinguish between mass and weight.
8. The value of g at the centre of Earth is zero. What will be the weight
of a body of mass m kg at the centre of the Earth?
9. State the S.L. units of (a) mass and (b) weight.
10. Define the term acceleration due to gravity? Write its S.l. unit,​

Answer 1

Answer:

according to newton s third law of motion, there is a equal reaction force for every force (1)