ECAT Pre Engineering Physics Chapter 3 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 3 Motion and Force

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 3 Motion and Force

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Physics ECAT Pre Engineering Chapter 3 Motion and Force

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Question # 1

An object is dropped from a height of 100 m. Its velocity at the moment it touches the ground is:

Question # 2

An object thrown upward with an initial velocity at certain angle with the horizontal and moving freely under the action of gravity is called

Question # 3

If d is the displacement of the body in time t, then its average velocity will be

Question # 4

The dimension of linear inertia is:

Question # 5

A body is dropped from a tower with zero velocity, reaches ground in 4s. The height of the tower is about

Question # 6

A body is moving with constant velocity of 10 m/sec in the north-east direction. Then its acceleration will be:

Question # 7

A force of 50 dynes is acted on a body of mass 5 g which is at rest, for an interval of 3 seconds, then impulse is

Question # 8

When a bicycle is in motion, the frictional forces exerted by the ground are

Question # 9

By which velocity a ball be projected vertically so that the distance covered by it in 5th seconds is twice the distance it covers in its 6th second ( g=10m/s2)

Question # 10

A car travels first half distance between two places with a speed of 30 km/h and remaining half with a speed of 50 km/h. The average speed of the car is

Question # 11

When the total displacement is divided by total time taken, we get:

Question # 12

An aircraft is moving with a velocity of 300 ms-1. If all the forces acting on it are balanced, then

Question # 13

A boat of mass 40 kg is at rest, A dog of mass 4 kg moves in the boat with a velocity of 10 m/s. What is the velocity of boat?

Question # 14

Rate of change of momentum is called

Question # 15

During the projectile motion, the horizontal component of velocity

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 The direction of the acceleration is the same as that of
A. speed
B. velocity
C. both of them
D. none of them
2 The velocity of a body at any instant of its motion is known as
A. average velocity
B. instantaneous velocity
C. uniform velocity
D. none of them
3 An object is dropped from a height of 100 m. Its velocity at the moment it touches the ground is:
A. 100 m/sec
B. 140 m/sec
C. 1960 m/sec
D. 196 m/sec
4 Acceleration in a body is always produced in the directin of:
A. Velocity
B. Weight
C. Force
D. Botha B and C
5 A certain force gives an acceleration of 2 m/sec2 to a body if mass 5 kg. The same force would give a 29 kg object an acceleration of:
A. 0.5 m/sec2
B. 5 m/sec2
C. 1.5 m/sec2
D. 9.8 m/sec2
6 The short distance between two points direction from its initial point to final point is called:
A. Velocity
B. Displacement
C. Speed
D. Distance
7 A non-inertial frame of reference is that frame of reference in which
A. a = 0
B. a > 0 or a < 0
C. v = 0
D. none of them
8 A body is dropped from a tower with zero velocity, reaches ground in 4s. The height of the tower is about
A. 80 m
B. 20 m
C. 160 m
D. 40 m
9 A body of weight 1 N has a kinetic energy of 1 joule when its speed is:
A. 1.46 m sec-1
B. 2.44 m sec-1
C. 3.42 m sec-1
D. 4.43 m sec-1
10 A railway engine (mass 104kg) is moving with a speed of 73 km/h. The force which should be applied to bring it to rest over a distance of 20 m is
A. 3,600 N
B. 7,200 N
C. 10,000 N
D. 100,000 N

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