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PHYSICS

Force and Motion

Q. 1 Inertia of a body has direct dependence on

A. Velocity B. Volume
C. Mass D. Density
Q. 2 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
o o
Q. 3 Two balls projected at 30 and 60 with same initial velocities. The ratio of their
maximum heights is
A. 1:2 B. 1:4
C. 1:3 D. 1: 2
Q. 4 A graph is drawn with force along Y-axis and time along X-axis. The area under the
graph represents
A. Momentum B. Couple
C. Moment of the force D. Impulse of the force
Q. 5 At which point for a projectile its kinetic energy is completely converted into potential energy
A. At point of projection B. At the highest point
C. Point to hit the ground D. Not possible
Q. 6 What is the resultant force shown in fig?

A. 7 N towards B. 17N in arbitrary direction

C. 3N toward left D. 10N towards left
Q. 7 A 7.0 kg bowling ball experiences a net force of 5.0 N what will be its acceleration?
A. 7.1 ms-2 B. 0.71 ms-2
-2
C. 5.0 ms D. 35.0 ms-2
Q. 8 Two projectiles are fired at different angles with the same magnitude of velocity
such that they have the same range. At what angles they might have been projected?
A. 35° and 75° B. 25° and 65°
C. 10° and 50° D. None of the above
Q. 9 A train takes 1 hour to go from one station to the other. It travels at a speed of 30
kmh–1 for first half hour and at a speed of 50 kmh–1 for the next half hour. The
average speed of the train is:
A. 45 kmh–1 B. 35 kmh–1
 C. 40 kmh–1 D. 30 kmh-1
Q. 10 An object is dropped from rest. Its v-t graph is

A. B. C. D.

Q. 11 If a projectile is thrown with 19.6m/s velocity at 30° with x-axis, time taken to reach
highest point?
A. 1 sec B. 2 sec
C. 3 sec D. 4 sec

Q. 12 The distance travelled is given by

A. Area under speed-time graph B. Area under distance-time
C. Slope of velocity-time graph graph D. Slope of distance-time
graph

Q. 13 If a body starts from a point, and returns back to the same point, then its
A. Average velocity is zero but not average speed
B. Both average velocity and average speed are not zero
C. Average speed is zero but not average velocity
D. Both average speed and average velocity are zero
Q. 14 Velocity and acceleration are in the same direction when
A. Velocity of a car is increasing on a straight road
B. Velocity of a car is decreasing on a straight road
C. Car is turning round a corner
D. None of these
Q. 15 When the average velocity of a moving body is equal to its instantaneous velocity
then it is moving with
A. Uniform velocity B. Uniform acceleration
C. Variable velocity D. Variable acceleration
Q. 16 If the initial speed of a projectile is doubled.
A. Its range will double B. Its range will quadruple
C. Its range will be decreased by a factor of two D. Its range will decrease by a factor of four
Q. 17 In straight line motion the
A. Acceleration is parallel (or antiparallel) to the velocity
B. Acceleration is perpendicular to the velocity
C. Acceleration is vertical, while the velocity can be in any direction
D. Acceleration is vertical and the velocity is horizontal
Q. 18 In projectile motion the
A. Acceleration is parallel (or antiparallel) to the velocity
B. Acceleration is perpendicular to the velocity
C. Acceleration is vertical, while the velocity can be in any direction
D. Acceleration is vertical and the velocity is horizontal
Q. 19 A ball is in free fall. Its acceleration is:
A. Downward during both ascent and descent
B. Downward during ascent and upward during descent
C. Upward during both ascent and descent
D. Upward during ascent and downward during descent
Q. 20 A baseball is thrown vertically into the air. The acceleration of the ball at its highest point is:
A. Zero B. g, up
C. g, down D. 2g, down

Q. 21 A newton is the force

A. Of gravity on a 1kg body
B. Of gravity on a 1g body
C. That gives a 1kg body an acceleration of 1m/s2
D. That gives a 1g body an acceleration of 1cm/s2
Q. 22 A projectile is thrown at an angle of 30o with the horizontal has a range R1, and attains a
maximum height h1 –Another projectile thrown, with the same velocity at an angle 30o with the
vertical has a range R2 and attains a maximum height h2. The relation between R1 and R2 is
R =R 2
A. 1 B. R1 =R2
2
C. R1 =2R2 D. R1 =4 R2
Q. 23 Consider the following five graphs (note the axes carefully). Which of these
represents motion at constant speed?

A. IV only B. I and IV only C. IV and V only D. I and II only

Q. 24 The displacement time graph for a moving particle is given below. The
instantaneous velocity of the particle is negative at the point.

A.D B.F
C.C D.E

Q. 25 The ratio of magnitudes of average velocity to average speed of a moving body in a

straight line
A. Always less than one B. Always equal to one
C. Always more than one D. Equal to or more than one
Q. 26 The “reaction” force does not cancel the “action” force because:
A. The action force is greater than the reaction force
B. They act on different bodies

Q. 27 Deceleration may be
A. 0 B. Positive
C. Negative D. Positive or negative
Q. 28 No body begin to move or comes to rest itself is statement of
A. Newton B. Abu Ali Sena
C. Maxwell D. Planck’s
Q. 29 The slope of distance – time graph will always be:
A. Negative B. Positive
C. Zero D. Maximum
Q. 30 Decrease in velocity per unit time is called
A. Acceleration B. Deceleration
C. Positive acceleration D. Uniform acceleration
Q. 31 Displacement-time graph for an object moving with constant velocity is a
A. Straight line parallel to time axis
B. Straight line passing through origin
 C. Elliptical
D. Straight line parallel to displacement axis
Q. 32 An object is accelerating
A. Only when its speed changes.
B. Only when its direction changes.
C. When its speed or direction changes.
D. If its velocity is large
Q. 33 If the force acting on a body is doubled, then the acceleration produced is _________
A. ½ B. 1/4
C. Double D. Quadrupled
Q. 34 Given here is a velocity-time graph of the motion of a body. What is the distance
travelled by the body during the motion?

A. 1/2(OA+AB)×BC B. 1/2(OA+BC)×OC
C. 1/2(OC+AB)×AD D. 1/2(AD+BE)×OC

Q. 35 What will happen if a force is applied to a body moving with a

constant speed along
a straight line?
A. The speed increases B. The direction
changes
C. The momentum decreases D. Continues to move
with uniform velocity
Q. 36 A ball is thrown and follows a parabolic path, as shown above.
Air friction is negligible. Point Q is the highest point on the
path. Which of the following best indicates the direction of the
acceleration, if any, of the ball at point Q?

A. B. C. D.
Q. 37 Which graph represents the zero acceleration

A. B.
 C. D.
Q. 38 If a stone is released from moving train, then the stone will follow
A. Hyperbolic path B. Straight path
C. Parabolic path D. Circular path
Q. 39 A body, whose momentum is constant, must have constant
A. Force B. Velocity
C. Acceleration D. All of these
Q. 40 Instantaneous and average velocities become equal when body.
A. Has zero acceleration B. Has uniform acceleration
C. Has variable acceleration D. Moves in a circle
Q. 41 From the following displacement-time graph find out the velocity of a moving body

m
e

e
c
s
(

)
30o
O
Displacement (meter)

1
A. m/s B. 3 m/s
3
1
C. 3 m/s D.
3
Q. 42 A body of mass m collides against a wall with a velocity v and rebounds with the
same speed. Its change of momentum is
A. 2 mv B. mv
C. – mv D. Zero
Q. 43 A person can throw a stone to maximum distance of 80m the greatest height to
which he can throw the stone is
A. 100 m B. 50 m
C. 80 m D. 20 m
Q. 44 At the top of trajectory in projectile motion angle between v and acceleration is
A. 90° B. 60°
C. 0° D. 180°
Q. 45 K.E of projectile at highest point is half of its initial K.E angle of projection is
A. 30o B. 45o
C. 60o D. None
Q. 46 The speed of a car weighing 1500 kg increases from 36 km/h to 72 km/h uniformly.
What will be the change in momentum of the car?
A. 15000 kg km/h B. 15000 kg m/s
C. 54000 kg m/s D. 54000 g m/s
R = Rmax
Q. 47 If then angle of projection is
2

A. 30o B. 60o
C. 15o D. None
Q. 48 If two equal masse (m1 = m2) collide elastically in one dimension, where m2 is at rest
and m1 moving with velocity u1, then final velocities of the two masses are
A. v1 = v2 = 0 B. v1 = 0; v2 = u1
C. v1 = –u1; v2 = 0 D. v1 = 0 ; v2 = –u1
Q. 49 A rifle of mass M is initially at rest but free to recoil. It fires a bullet of mass m and
velocity v (relative to the ground). After firing, the velocity of the rifle (relative to
the ground) is:
A. −Mv/m B. −mv
C. mv/M D. −mv/M
Q. 50 The acceleration of a projectile relative to another projectile is
A. g B. 0
C. –g D. 2g