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

Question # 1

If the range of a projectile is R, the potential energy will be maximum after the projectile has covered (from start) distance equal to:

R/2 A
R/4 B
R C
R/9 D

Question # 2

If velocity time graph is a straight line parallel to time axis then body is

Moving with zero acceleration A
Moving with constant velocity B
Covering equal displacement in equal intervals of time C
All of these D

Question # 3

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 # 4

A man has weight 980 N in a stationary lift. What will be his weight if the lift starts moving up with anacceleration of 4.9 ms^-2

980 N A
1470 N B
1980 N C
1460 N D

Question # 5

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 # 6

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 # 7

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 # 8

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

1/2 𝑡² A
vt B
𝑎𝑡² C
𝑎𝑡₂ D

Question # 9

A body is in translational equilibrium if

P = 0 A
L = 0 B
F = 0 C
 = 0 D

Question # 10

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 # 11

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 # 12

Two bodies are projected at angle 𝜽 𝒂𝒏𝒅 (𝟗𝟎 − 𝜽) to the horizontal with the same speed. The ratio of their times of flight is:

sin 𝜃 : 1 A
cos 𝜃 : 1 B
sin 𝜃 : cos𝜃 C
cos 𝜃 : sin𝜃 D

Question # 13

. Time rate of change of momentum is equal to

Force A
Impulse B
Velocity C
Both A and C D

Question # 14

A stone is thrown upwards it returns to ground describing a parabolic path which of the following remains constant:

Speed of the ball A
Kinetic energy of the ball B
Vertical component of velocity C
) Horizontal component of velocity D

Question # 15

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 # 16

Speedometer of an automobile measures

Average velocity A
Instantaneous velocity B
Acceleration C
Instantaneous speed D

Question # 17

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 # 18

If a body changes its momentum from 100 N s to 200 N s in 10 s then the unbalanceexternal force responsible to change the momentum is

5 N A
2.5 N B
2n C
10n D

Question # 19

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 # 20

A particle executing one dimensional motion, finally comes to rest, what will be the angle between acceleration and displacement during motion:

0 A
π B
𝜋/2
C
𝜋/4
D

Sr.#	Question	Answer
1	A stone is thrown upwards it returns to ground describing a parabolic path which of the following remains constant:	A. Speed of the ball B. Kinetic energy of the ball C. Vertical component of velocity D. ) Horizontal component of velocity
2	Two bodies are projected at angle 𝜽 𝒂𝒏𝒅 (𝟗𝟎 − 𝜽) to the horizontal with the same speed. The ratio of their times of flight is:	A. sin 𝜃 : 1 B. cos 𝜃 : 1 C. sin 𝜃 : cos𝜃 D. cos 𝜃 : sin𝜃
3	A man has weight 980 N in a stationary lift. What will be his weight if the lift starts moving up with anacceleration of 4.9 ms^-2	A. 980 N B. 1470 N C. 1980 N D. 1460 N
4	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
5	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
6	What is the resultant force in the diagram shown?	A. Zero B. 6N to left C. 6N to right D. 11N to right
7	Speedometer of an automobile measures	A. Average velocity B. Instantaneous velocity C. Acceleration D. Instantaneous speed
8	A boy is travelling from Lahore to Karachi with uniform velocity . Its	A. Speed changes B. Acceleration changes C. Direction of motion changes D. Displacement from origin changes
9	. Time rate of change of momentum is equal to	A. Force B. Impulse C. Velocity D. Both A and C
10	If velocity time graph is a straight line parallel to time axis then body is	A. Moving with zero acceleration B. Moving with constant velocity C. Covering equal displacement in equal intervals of time D. All 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

If the range of a projectile is R, the potential energy will be maximum after the projectile has covered (from start) distance equal to:

If velocity time graph is a straight line parallel to time axis then body is

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?

A man has weight 980 N in a stationary lift. What will be his weight if the lift starts moving up with anacceleration of 4.9 ms-2

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:

select Which one of the following is not performing projectile motion

Swimming is possible on account of

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

A body is in translational equilibrium if

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

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

Two bodies are projected at angle 𝜽 𝒂𝒏𝒅 (𝟗𝟎 − 𝜽) to the horizontal with the same speed. The ratio of their times of flight is:

. Time rate of change of momentum is equal to

A stone is thrown upwards it returns to ground describing a parabolic path which of the following remains constant:

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:

Speedometer of an automobile measures

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

If a body changes its momentum from 100 N s to 200 N s in 10 s then the unbalanceexternal force responsible to change the momentum is

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

A particle executing one dimensional motion, finally comes to rest, what will be the angle between acceleration and displacement during motion:

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A man has weight 980 N in a stationary lift. What will be his weight if the lift starts moving up with anacceleration of 4.9 ms^-2