Multiple Choice Questions
1. Laws of
motion are valid in a frame of reference which is
a) Inertial
b) Non-inertial
c) At rest
d) None of the above
2. Laws of
motion not valid in a system which is
a) At rest
b) Inertial
c)
Non-inertial
d) Moving with uniform velocity
3. The
laws of motion give the relation between
a) Mass and
velocity
b) Force and acceleration
c) Velocity
and acceleration
d) Mass and weight
4. If the
slope of the velocity-time graph increases at constant rate, with time, then
the body is said
to have
a) Uniform
retardation
b) Uniform negative acceleration
c) Average
acceleration
d) Uniform positive acceleration
5.
Newton’s second law of motion is also called
a) Law of
inertia
b) Law of acceleration
c) Law of
gravitation
d) Law of thermodynamics
6. The
force acting on a body of mass 10 kg falling under gravity is
a) 98 N
b)
9.8 N
c) 0 N
d) 49
N
7. A body
of mass 5 kg starts from rest and falls freely. The distance covered by it in
one second is
a) 9.8 m
b)
980 m
c) 49 m
d)
4.9 m
8. A body
is moving in a circle at a constant speed. Which of the following statements is
true?
a) There is
no acceleration
b) There is no force acting on it
c) There is
a force acting at a tangent to the circle
d) There is
a force acting towards the centre of the circle
9. When a
force is applied to a body, several effects are possible. Which of the
following effects
could not
occur?
a) The body
rotates
b) The body speeds up
c) The mass
of the body decreases
d) The body changes direction
10. What
must be changing when a body is accelerating uniformly?
a) The force
acting on the body
b) The velocity of the body
c) The mass
of the body
d) The speed of the body
Answer