Q 1 – Among the equal-sized stone and a football, the inertia will be higher of:
(a) football
(b) stone
(c) both
(d) none of them
(b) Stone
Q 2 – If car A is at 40 km/h and car B is at 10 km/h in the opposite direction, what is the velocity of the car A relative to the car B?
(a) 40 km/h
(b) 50 km/h
(c) 10 km/h
(d) 30 km/h
(b) 50 km/h
Q 3 – What is the momentum of an object of mass m, moving with a velocity v?
(a) (mv)2
(b) mv2
(c) 1/ 2 mv2
(d) mv
(d) mv
Q 4 – Which of the following statements is not correct for an object moving along a straight path in an accelerated motion?
(a) Its speed keeps changing
(b) Its velocity always changes
(c) It always goes away from the Earth
(d) A force is always acting on it
(d) A force is always acting on it
Q 5 – Name the instrument used to measure instantaneous speed of a vehicle
(a) multimeter
(b) ammeter
(c) speedometer
(d) accelerator
(c) speedometer
Q 6 – According to the third law of motion, action and reaction
(a) always act on the same body
(b) always act on different bodies in opposite directions
(c) have same magnitude and directions
(d) act on either body at normal to each other
(b) always act on different
bodies in opposite directions
Q 7 – The inertia of an object tends to cause the object
(a) to increase its speed
(b) to decrease its speed
(c) to resist any change in its state of motion
(d) to decelerate due to friction
(c) to resist any change in its state of motion
Q 8 – A passenger in a moving train tosses a coin which falls behind him. It means that motion of the train is
(a) accelerated
(b) uniform
(c) retarded
(d) along circular tracks
(a) accelerated
Q 9 – An object of mass 2 kg is sliding with a constant velocity of 4 ms-1 on a frictionless horizontal table. The force required to keep the object moving with the same velocity is
(a) 32 N
(b) 0 N
(c) 2 N
(d) 8 N
(b) 0 N
Explanation: From newton’s 1st law of motion, since there is no external force acting on the object it will remain in its original state of motion. Hence, zero force is required to keep the object moving with constant velocity, correct answer is B.
Q 10 – A water tanker filled up to 23 of its height is moving with a uniform speed. On a sudden application of brakes, the water in the tank would
(a) move backward
(b) move forward
(c) be unaffected
(d) rise upward
(b) move forward
Q 11 – What is the average velocity of a car that moved 60 km in 3 hours?
(a) 60 km/h
(b) 20 km/h
(c) 30 km/h
(d) 10 km/h
(b) 20 km/h
Q 12 – When a number of forces acting simultaneously on a body bring about a change in its state of rest or of uniform motion in a straight line, then these forces acting on the body are said to be
(a) balanced forces
(b) equal forces
(c) unbalanced forces
(d) opposite forces
(d) opposite forces
Q 13 – When a car at high speed makes a sharp turn, the driver in a car tends to get thrown to the side opposite to the turn. This is due to the
(a) inertia of motion
(b) inertia of time
(c) inertia of rest
(d) inertia of direction
(a) inertia of motion
Q 14 – A man is standing on a boat in still water. If he walks towards the shore, then the boat will
(a) move away from the shore
(b) move towards the shore
(c) remain stationary
(d) none of these
(a) move away from the shore
Q 15 – 180° plane angle is equal to
(a) π/2 radian
(b) π radian
(c) 2π radian
(d) none of these
(b) π radian
Q 16 – Which of the following is an incorrect statement?
(a) Mass is measure of inertia of a body.
(b) Newton’s first law of motion is the law of inertia.
(c) Unbalanced force produces constant velocity.
(d) Newton’s third law talks about the direction of the force
(c) Unbalanced force produces constant velocity.
Q 17 – 1 km/ h = ________ m/s
(a) 3/50
(b) 18/5
(c) 50/3
(d) 5/18
(d) 5/18
Q 18 – The ratio of the heights from which two bodies are dropped is 3:5 respectively. The ratio of their final velocities is:
(a) 9: 25
(b) √ 3: √ 5
(c) 5 : 3
(d) √5 : √3
(b) √ 3: √ 5
Q 19 – Inertia is the property of a body by virtue of which, it cannot change by itself
(a) its state of rest
(b) its steady state of uniform motion
(c) its direction of motion
(d) all of these.
(d) all of these
Q 20 – The ratio of C.G.S. to M.K.S. unit of acceleration is:
(a) 1:10
(b) 1:1
(c) 1:100
(d) 10:1
(c) 1:100
Q 21 – A bullet of mass A and velocity B is fired into a wooden block of mass C. If the bullet gets embedded in the wooden block, then the magnitude of velocity of the system just after the collision will be
(d)
Q 22 – The masses of two bodies are in ratio 5 : 6 and their velocities are in ratio 1 : 2. Then their linear momentum will be in the ratio
(a) 5 : 6
(b) 1 : 2
(c) 12 : 5
(d) 5 : 12
(d) 5 : 12
Q 23 – A man is moving with 36 kmph. The time of reaction is 0.9 seconds. On seeing an obstacle in the path, he applies brakes and decelerates at 5 m/s2, the total distance covered before he stops is:
(a) 19 m
(b) 17 m
(c) 16 m
(d) 18 m
(a) 19 m
Q 24 – The inertia of an object tends to cause the object
(a) to increase its speed
(b) to decrease its speed
(c) to resist any change in the state of rest or of motion
(d) to decelerate due to friction
(c) to resist any change in the state of rest or of motion
Q 25 – Find the time taken by a body of mass 16 kg to come to rest from a uniform velocity of magnitude 10 m/s, when a force of 4N is applied continously
(a) 20 s
(b) 30 s
(c) 40 s
(d) 50 s
(c) 40 s
Q 26 – A force of ‘P* N acts on a particle so as to accelerate it from rest to a velocity ‘v’ m/s. The force ‘P’ is then replaced by ‘Q’ N which
decelerates it to rest.
(a) P may be equal to Q
(b) P must be equal to Q
(c) P must be unequal to Q
(d) none of these
(a) P may be equal to Q
Q 27 – 1-kg object is lying on the ground. An unbalanced force of magnitude 1 N is applied to the object. Which of these options explains the motion of the object as a result of the acting force?
(a) The object will accelerate in the direction of the applied force.
(b) The object will accelerate in a direction perpendicular to the applied force.
(c) The object will decelerate in the direction of the applied force.
(d) The object will remain at rest
(a) The object will accelerate in the direction of the applied force.
Q 28 – What is the momentum of a body of mass 2m and velocity v/2?
(a) mv/4
(b) mv
(c) 2mv
(d) mv/2
(b) mv
Q 29 – In high jump competition the athlete is made to fall on a cushioned bed to:
(a) To decrease his momentum fast.
(b) Make him stop quickly.
(c) Increase the time to stop.
(d) Make him sleep comfortably.
(c) Increase the time to stop.
Q 30 – Which of the following has the largest momentum?
(a) A cat running down the street
(b) A pickup truck travelling down the highway.
(c) A large truck parked in a parking lot.
(d) A car parked in a parking lot.
(b) A pickup truck travelling down the highway.
Q 31 – Change in momentum when a car weighing 700kg changes its speed from 100m/s to 200 m/s is:
(a) 14000 kg.m/s
(b) 10500000 kg.m/s
(c) 21000000 kg.m/s
(d) 70000 kg.m/s
(d) 70000 kg.m/s
Q 32 – __________ is a force, which always opposes the motion of one body over the other body in contact with it
(a) Gravitational force
(b) Reaction force
(c) Normal force
(d) Frictional force
(d) Frictional force
Q 33 – Who gave the equations of motion for the first time?
(a) Bernhard Nobel
(b) Issac Newton
(c) C. V. Raman
(d) Einstein
(b) Issac Newton
Q 34 – The rate of change of velocity per second is known as:
(a) acceleration
(b) speed
(c) average velocity
(d) linear motion
(a) acceleration
Q 35 – If the velocity of an object changes from an initial value u to the final value v in time t, the acceleration a will be:
(a)
Q 36 – If the displacement of an object is proportional to the square of time, then the object moves with:
(a) uniform velocity
(b) uniform acceleration
(c) increasing acceleration
(d) decreasing acceleration
(b) uniform acceleration
Q 37 – A body is thrown vertically upward with velocity u, the greatest height h to which it will rise is,
(a) ulg
(b) u2l2g
(c) u2lg
(d) ul2g
(b) u2l2g
Q 38 – Area under a V – t graph represents a physical quantity which has the unit
(а) m2
(b) m
(c) m3
(d) ms-1
(b) m
Q 39 – Which of the following figures correctly represents uniform motion of a moving object?
(a)
Q 40 – In which of the following cases of motions, the distance moved and the magnitude of displacement are equal?
(a) If the car is moving on a straight road
(b) If the car is moving in Circular path
(c) The pendulum is moving to and fro
(d) The earth is revolving around the sun.
(a) If the car is moving on a straight road
Q 41 – A boy goes from A to B with a velocity of 20 m/min and comes back from B to A with a velocity of 30 m/min. The average velocity of the boy during the whole journey is
(a) 25 m/min
(b) 25 m/s
(c) Zero
(d) 20 m/min
(a) 25 m/min
Q 42 – Velocity-time graph of an object is given below. The object has
(a) Uniform velocity
(b) Uniform speed
(c) Uniform retardation
(d) Variable acceleration
(c) Uniform retardation
Q 43 – A body is projected vertically upward from the ground. Taking vertical upward direction as positive and point of projection as origin, the sign of displacement of the body from the origin when it is at height h during upward and downward journey will be
(a) Positive, positive
(b) Positive, negative
(c) Negative, negative
(d) Negative, positive
(b) positive , Negative
Q 44 – A car is moving along a straight road with uniform velocity. It is shown in the graph.
Option (d)
Q 45 – Which of the following situations is possible?
(a) An object can have acceleration, but constant velocity.
(b) The velocity of an object may be zero but acceleration is not zero.
(c) Distance and the magnitude of displacement are equal in circular motion.
(d) Average speed and the magnitude of average velocity are always equal in circular motion.
(b) The velocity of an object may be zero but acceleration is not zero.
Hint:- When the object is thrown upwards and it is at the highest point .
Q 46 – Which of the following graphs is not possible?
Option (b)
Q 47 – Which of the following statement is correct regarding velocity and speed of a moving body?
(a) Velocity of a moving body is always higher than its speed
(b) Speed of a moving body is always higher than its velocity
(c) Speed of a moving body is its velocity in a given direction
(d) Velocity of a moving body is its speed in a given direction
(d) Velocity of a moving body is its speed in a given direction
Q 48 – Which of the following is a correct measure of velocity?
(a) 30 s
(b) 30 m/s
(c) 30 South
(d) 30 m/s, South
(d) 30 m/s, South
Hint:- Velocity is a Vector quantity. Both magnitude and direction are needed.
Q 49 – When unbalanced forces act on a body, the body:
(a) Must move with uniform velocity
(b) Must remain at rest
(c) Must experience acceleration
(d) Must move in a curved path
(c) Must experience acceleration
Q 50 – A man throws a ball weighing 200 g vertically upwards with a speed of 10m/s. Its momentum at the highest point of its flight will
be:
(a) 2 kg. m/s
(b) 2000 kg.m/s
(c) Insufficient data to find the momentum.
(d) zero
(d) zero
Explanation :- At the highest point of the upward motion, velocity is zero . Momentum = mass x velocity. Therefore , momentum is zero at highest point.
Q 51 – An object travels 20 m in 5 sec and then another 40 m in 5 sec. What is the average speed of the object?
(a) 6 m/s
(b) 2 m/s
(c) 12 m/s
(d) 0 m/s
(a) 6 m/s
Q 52 – Which of the following situations are not possible?
(a) A body moving with constant acceleration but with zero velocity.
(b) A body moving horizontally with an acceleration in vertical direction
(c) A body moving with a constant velocity in an accelerated motion
(d) All of these
(c) A body moving with a constant velocity in an accelerated motion
Q 53 – A boy throws a ball up and catches it when the ball falls back. In which part of the motion the ball is accelerating?
(a) During downward motion
(b) When the ball comes to rest
(c) During upward motion
(d) When the boy catches the ball
(a) During downward motion
Q 54 – Choose the correct option:
(a) distance is a scalar, velocity is a vector , acceleration is a vector.
(b) distance is a vector, velocity is a scalar, acceleration is a vector.
(c) distance is a vector, velocity is a vector, acceleration is a vector.
(d) distance is a scalar, velocity is a vector, acceleration is a scalar.
(a) distance is a scalar, velocity is a vector , acceleration is a vector.
Q 55 – A racing car has a uniform acceleration of 6 m/s2. In 10s it will cover:
(a) 300 m
(b) 100 m
(c) 200 m
(d) 350 m
(a) 300 m
Q 56 – A body starts to slide over a horizontal surface with an initial velocity of 0.2 m/s. Due to friction, its velocity decreases at the rate of 0.02 m/s2. How much time will it take for the body to stop?
(a) 10s
(b) 15s
(c) 1s
(d) 5s
(a) 10s
Q 57 – The equations of motion can be derived by using:
(a) Distance – time graph
(b) Velocity – time graph for non-uniform acceleration
(c) Displacement time graph
(d) Velocity – time graph for uniform acceleration
(d) Velocity – time graph for uniform acceleration
Q 58 – Which of the following is not an application of conservation of linear momentum?
(a) While firing a bullet, the gun must be held tight to the shoulder
(b) When a man jumps from a boat to the shore
(c) A rocket explodes on midway from the ground
(d) A body suspended from the hook of a spring balanced in a lift which is accelerated downward
(c) A rocket explodes on midway from the ground
Q 59 – When we stop pedalling, the bicycle begins to slow down. This is because of the
(a) Frictional force acting along the direction of motion of bicycle
(b) Air resistance which is in the direction of motion
(c) Frictional force acting opposite to the direction of motion of bicycle by the road
(d) Nature of the bicycle to stop after some time
(d) Nature of the bicycle to stop after some time
Q 60 – Distance covered by a body from velocity-time graph is
(a) Equal to the slope of the graph.
(b) Area under the graph.
(c) Is denoted by a line parallel to the time axis at any point on the distance axis.
(d) Is denoted by a line parallel to the distance axis at any point on the time axis.
(b) Area under the graph.