ECAT Pre Engineering Physics Chapter 3 MCQ Test With Answer

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

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

Question # 2

A body starting from rest covers a distance of 0.45 Km and acquires a velocity of 300 Kmh-1. its acceleration will be

Question # 3

The direction of velocity is along the direction of

Question # 4

In the above figures, tell which set is graphs shows that a body is moving uniform velocity:

Question # 5

The dimension of linear inertia is:

Question # 6

Laws of motion are not valid in a system which is

Question # 7

When the mass of the colliding body is much larger than the mass of the body at rest, its velocity after collision.

Question # 8

Blomass includes:

Question # 9

For a given angle of projection, if the time of flight of a projectile is doubled, the horizontal range will increases to

Question # 10

A body of mass 5 kg is acted upon by a constant force of 20 n for 7 seconds. The total change in momentum will be:

Question # 11

The velocity given to a body to go out of the influence of earth's gravity is known as:

Question # 12

Biomass includes:

Question # 13

When brakes are applied to a fast moving car, the passenger will be thrown:

Question # 14

A body is thrown from a height h with speed u, it hits the ground with speed V

Question # 15

The velocity of a projectile is maximum

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 The range of projectile is 50 m whenθ is inclined with horizontal at 15°. What is the range whenθ becomes 45°?
A. 400 m
B. 300 m
C. 200 m
D. 100 m
2 During the upward motion of the projectile, the vertical component of velocity:
A. Decreases
B. Increases
C. Remains constant
D. None of these
3 When a horse pulls a cart, the force that makes the horse run forward is the force exerted by
A. The horse on the ground
B. The horse on the cart
C. The ground on the horse
D. The ground on the cart
4 The dimension of linear inertia is:
A. MLT2
B. ML°T-2
C. ML°T°
D. MLT-1
5 The path described by a projectile is called its
A. orbit
B. trajectory
C. range
D. distance
6 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
7 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
8 Range of a projectile is R, when the angle of projection is 30° . Then, the value of the other angle of projection for the same range, is
A. 45°
B. 60°
C. 50°
D. 40°
9 When the surfaces are coated with a lubricant, then they
A. Stick to each other
B. Slide upon each other
C. Roll upon each other
D. None of these
10 A body walks to his school at a distance of 6 km with a speed of 2.5 km/h and walks back with a constant speed of 5 km/h. His average speed for round trip expressed in km/h is
A. 24/13
B. 10/3
C. 3
D. 4,8

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