MDCAT Physics Chapter 2 online mcq test with answers for chapter 2 (Work and Energy)

Question # 1

The time of flight of a projectile is maximum when angle of projection is:

30 Degree A
45Degree B
60Degree C
90Degree D

Question # 2

The rate of change of momentum of a body falling freely under gravity is equal to its

Impulse A
Kinetic energy B
Pover C
Weight D

Question # 3

At the highest point on the trajectory of a projectile, its

Potential energy is minimum A
Kinetic energy is maximum B
Total energy is maximum C
Kinetic energy is minimum D

Question # 4

The angle of projection, at which the range of projectile would become half of its maximum value.

45Degree A
30Degree B
15Degree C
60 Degree D

Question # 5

Newton’s third law concerns the forces of interaction between two bodies. Which of the following statement relating to the third law is not correct:

The two forces must be the same type A
The two forces must act on different bodies B
The two forces are always opposite in direction C
The two forces are equal and opposite so the bodies are in equilibrium D

Question # 6

A ball takes ‘t’ second to fall from a height 𝒉𝟏 and ‘2t’ second to fall from a height 𝒉𝟐 then h1/h2 is:

2 A
4 B
0.5 C
0.25 D

Question # 7

A rigid uniform bar of length 2.4 m is pivoted horizontally at its mid-point, weights are hung from two points of the bar as shown in diagram. To maintain horizontal equilibrium, a couple is applied to the bar: What is the torque and the direction of couple?

40 N m clockwise A
40 N m anti-clockwise B
80 N m clockwise C
80 N m anti-clockwise D

Question # 8

A rider uses Motorcycle safety helmet that extends the time of collision during accident hence decreasing the

Change of collisio A
Force acting B
Velocity C
Impulse D

Question # 9

In a one-dimensional elastic collision, the relative velocity of approach before collision is equal to:

Sum of the velocities of the bodies A
e times the relative velocity of separation after collision B
1⁄𝑒 times the relative velocity of separation after collision C
relative velocity of separation after collision D

Question # 10

Two projectiles ‘A’ and ‘B’ are thrown with same speed but at angle of 40 degree and 50 degree with the horizontal. The horizontal range of ‘A’ will be:

Equal to that of ‘B’ A
Greater than that of ‘B’ B
Less than that of ‘B’ C
4/5times that of ‘B’ D

Question # 11

In the absence of air resistance, a stone is thrown from P and follows a parabolic path in which the highest point reached is T. The vertical component of acceleration of stone is:

Zero at T A
Greatest at T B
) Greatest at P C
the same at P as at T D

Question # 12

Two railway trucks of masses m and 3m move towards each other in opposite directions with speeds 2v and v respectively. These trucks collide and stick together. What is the speed of the trucks after the collision?

v/4 A
v/2 B
v C
5v/4 D

Question # 13

The distance covered by a body in time ‘t’ starting from rest is:

1/2 𝑡² A
vt B
𝑎𝑡² C
𝑎𝑡₂ D

Question # 14

Vertical component of velocity of the projectile at any instant ‘t’ from the ground is given by:

𝑣𝑖𝑐𝑜𝑠𝜃 A
𝑣𝑖𝑐𝑜𝑠𝜃 − 𝑔t B
𝑣𝑖𝑠𝑖𝑛𝜃 − 𝑔t C
𝑣𝑖𝑠𝑖𝑛𝜃 + 𝑔t D

Question # 15

A body of mass m having an initial velocity v, makes head on elastic collision with a stationary body of mass m. After the collision, the body of mass m comes to rest and only the body having mass M moves. This will happen only when:

m>>M A
m<<M B
) m=M C
m=1M D

Question # 16

A machine gun fires ‘n’ bullets per second and the mass of each bullet is m. If v is the speed of each bullet then the force exerted on the machine gun is:

mng A
mnv B
mnvg C
mnv/g D

Question # 17

What is the resultant force in the diagram shown?

Zero A
6N to left B
6N to right C
11N to right D

Question # 18

Swimming is possible on account of

1^st law of motion A
2^nd law of motion B
3^rd law of motion C
Newton’s law of Gravitation D

Question # 19

select Which one of the following is not performing projectile motion

A gas filled balloon A
) Bullet fired from gun B
A football kicked C
A baseball shot D

Question # 20

As in linear motion force determines linear acceleration where as in circular motion torque determines its

Angular acceleration A
Linear acceleration B
Vibratory acceleration C
Tangential acceleration D

Sr.#	Question	Answer
1	A machine gun fires ‘n’ bullets per second and the mass of each bullet is m. If v is the speed of each bullet then the force exerted on the machine gun is:	A. mng B. mnv C. mnvg D. mnv/g
2	The distance covered by a body in time ‘t’ starting from rest is:	A. 1/2 𝑡² B. vt C. 𝑎𝑡² D. 𝑎𝑡₂
3	A particle executing one dimensional motion, finally comes to rest, what will be the angle between acceleration and displacement during motion:	A. 0 B. π C. 𝜋/2 D. 𝜋/4
4	In the absence of air resistance, a stone is thrown from P and follows a parabolic path in which the highest point reached is T. The vertical component of acceleration of stone is:	A. Zero at T B. Greatest at T C. ) Greatest at P D. the same at P as at T
5	Two 8 N forces act on each end of the beam of length 0.60m. Two forces are parallel and acting opposite to each other, the angle between the force and beam is 60o , what is the torque of the couple exerted on the beam:	A. 2.4 Nm B. 4.2 Nm C. 4.8 Nm D. 9.6 Nm
6	Speedometer of an automobile measures	A. Average velocity B. Instantaneous velocity C. Acceleration D. Instantaneous speed
7	A body of mass m having an initial velocity v, makes head on elastic collision with a stationary body of mass m. After the collision, the body of mass m comes to rest and only the body having mass M moves. This will happen only when:	A. m>>M B. m<<M C. ) m=M D. m=1M
8	The time of flight of a projectile is maximum when angle of projection is:	A. 30 Degree B. 45Degree C. 60Degree D. 90Degree
9	In a one-dimensional elastic collision, the relative velocity of approach before collision is equal to:	A. Sum of the velocities of the bodies B. e times the relative velocity of separation after collision C. 1⁄𝑒 times the relative velocity of separation after collision D. relative velocity of separation after collision
10	Two astronauts in a satellite must have	A. Same masses B. Same real weights C. Same apparent weights D. None of these

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MDCAT Physics Chapter 2 MCQ Test With Answer for (Motion & Force)

MCQ's Test For MDCAT Physics Chapter 2 Motion & Force Online Test

MDCAT Physics Chapter 2 Motion & Force Online Test