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

A 120 m long train is moving in a direction with speed 20 m/s. A train B moving with 30 m/s in the opposite direction and 130 m long crosses the first train in a time

Question # 2

The product of force and time is called

Question # 3

If the slope of the velocity-time graph increases at constant rate with time, then the body is said to have

Question # 4

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

Question # 5

In equation F=ma, then mass 'm' is

Question # 6

An airplane is flying horizontally with a velocity of 600 km/h and at a height of 1960 m. When it is vertically above a point A on the ground, a bomb is released from it. The bomb strikes the ground, at point B. The distance AB is

Question # 7

Root out of the conventional source of energy:

Question # 8

The time of flight of a projectile motion equal to

Question # 9

When two protons are brought closer potential energy of both of them:

Question # 10

The direction of the linear momentum is the direction of

Question # 11

A rocket carries its own fuel in the form of

Question # 12

What must be changing when a body is accelerating uniformly?

Question # 13

The product of force and time is called change in:

Question # 14

When a body is moving on a surface, the force of friction is called

Question # 15

During the upward motion of the projectile, the vertical component of velocity.

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 The projectile attains maximum horizontal range when it is projected at an angle of
A. 30°
B. 45°
C. 60°
D. 75°
2 The direction of velocity is along the direction of
A. distance
B. displacement
C. acceleration
D. all of them
3 For a moving body, at any instant of time
A. If the body is not moving the acceleration is necessarily zero
B. If the body is slowing, the retardation is negative
C. If the body is slowing, the distance is negative
D. If displacement, velocity and acceleration at that instant are known, we can find the displacement at any given time in future
4 The projectile motion is composed of
A. horizontal motion only
B. vertical motion only
C. horizontal and vertical motion
D. none of them
5 When a force is applied on a body, several effects are possible Which of the following effect could not occur?
A. the body rotates
B. the body speeds up
C. the mass of the body decreases
D. the body changes its direction
6 When the total displacement is divided by total time taken, we get:
A. Velocity
B. Average speed
C. Average velocity
D. None of these
7 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
8 The area under line velocity-time graph is numerically equal to the
A. speed of the body
B. acceleration of the body
C. distance covered by the body
D. none of them
9 Dimensions of velocity are
A. [L]
B. [T]
C. [LT-1]
D. [LT-2]
10 A projectile on its path gets divided into two pieces at its highest point. Which is true?
A. Momentum increases
B. Momentum decreases
C. Kinetic energy increases
D. Kinetic energy decreases

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