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.
