Multiple Choice Questions
1. When we
jump out of a boat standing in water it moves
a) Forward
b) Backward
c) Side ways
d) None of the above
2. When a
train stops suddenly passengers in the running train feel an instant jerk in
the forward
direction
because
a) The back
of seat suddenly pushes the passengers forward
b) Inertia
of rest stops the train and takes the body forward
c) Upper
part of the body continues to be in the state of motion whereas the lower part
of the body
in contact
with seat remains at rest
d) Nothing
can be said due to insufficient data
3. A car
is moving with a uniform velocity on a rough horizontal road. Therefore,
according to
Newton’s law
of motion
a) No force
is being applied by its engine
b) A force
is surely being applied by its engine
c) An
acceleration is being produced in the car
d) The
kinetic energy of the car is increasing
4. We can
derive Newton’s
a) Second
and third laws from the first law
b) First and
second laws from the third law
c) Third and
first laws from the second law
d) All the
three laws are independent of each other
5. A jet
plane lies in the air because
a) The gravity
does not act on bodies moving with high speeds
b) The
thrust of the jet compensates for the force of gravity
c) The flow
of air around the wings causes an upward force, which compensates for the force
of
gravity
d) The
weight of air whose volume is equal to the volume of the plane is more than the
weight of the
plane
6. A man
is at rest in the middle of a pond on perfectly smooth ice. He can get himself
to the shore
by making
use of Newton’s
a) First law
b) Second law
c) Third law
d) All the laws
7. Inertia
is that property of a body by virtue of which the body is
a) Unable to
change by itself the state of rest
b) Unable to
change by itself the state of uniform motion
c) Unable to
change by itself the direction of motion
d) Unable to
change by itself the state of rest and of uniform linear motion
8. A
cannon after firing recoils due to
a)
Conservation of energy
b) Backward thrust of gases produced
c) Newton’s
third law of motion
d) Newton’s first law of motion
9.
Newton’s second law gives the measure of
a)
Acceleration
b) Force
c) Momentum
d) Angular momentum
10. A man
getting down a running bus falls forward because
a) Due to
inertia of rest, road is left behind and man reaches forward
b) Due to
inertia of motion upper part of body continues to be in motion in forward
direction while
feet come to
rest as soon as they touch the road.
c) He leans
forward as a matter of habit
d) Of the
combined effect of all the three factors stated in a), b) and c)
Answer