### Can you recall? [TEXTBOOK QUESTIONS PAGE NO. 1]

Can you recall? [TEXTBOOK QUESTIONS PAGE NO. 1]

1.      What are the effects of a force acting on an object?

Ans. A force acting on an object may cause the object to change shape, to start moving, to stop moving, to accelerate or decelerate. When two objects interact with each other they exert a force on each other, the forces are equal in size but opposite in direction.

2.      What types of forces are you familiar with?

Ans. The type of force known to me are: Gravitational force, Nuclear Force, Electrostatic force and Magnetic Force.

3.      What do you know about the gravitational force?

Ans. The force which is applied by the earth to pull objects towards itself is known as gravitational force.

4.      What are Newton’s laws of motion?

Ans. Newton’s first law of motion: An object continues to remain at rest or in a state of uniform motion along a straight line unless an external unbalanced force acts on it.

Newton’s second law of motion: The rate of change of momentum is directly proportional to the applied force and takes place in the direction of the force.

Newton’s Third law of motion: For every action there is an equal and opposite reaction.