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

The SI units of momentum is

Question # 2

The second law gives the relationship between

Question # 3

The collision in which KE is conserved but momentum is not conserved is called:

Question # 4

An object thrown in arbitrary direction in space with an initial velocity and moving freely under gravity will follow

Question # 5

A train is moving with a velocity of 25 m/s and a car is moving behind it by a velocity of 8 m/s in same direction. The relative velocity of train with respect to car is

Question # 6

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

Question # 7

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

Question # 8

A vehicle of mass 120 kg is moving with a uniform velocity of 108 km/h. The force required to stop the vehicle in 10s is

Question # 9

The direction of the acceleration is the same as that of

Question # 10

Laws of motion are not valid in a system which is

Question # 11

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 # 12

A the top of the trajectory of a projectile, the directions of its velocity and acceleration are

Question # 13

Acceleration of a body at any particular instant during its motion is known as

Question # 14

Maximum height of a bullet when fixed at 30 with horizontal is 11 m. Then height when it is fired at 60° is

Question # 15

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

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 One newton is a force that produces an acceleration of 0.5 m/sec2in a body of mass:
A. 2 Kg
B. 3 Kg
C. 4 Kg
D. 8 Kg
2 Body which falls freely under gravity provides good example of motion under:
A. Uniform acceleration
B. Non-uniform acceleration
C. Uniform velocity
D. None of these
3 Change in momentum is one second is called:
A. Impulse
B. Force
C. Energy
D. Work
4 A body whose momentum is constant must have constant
A. Acceleration
B. Velocity
C. Force
D. None of these
5 Root out of the conventional source of energy:
A. Energy from biomass
B. Hydroelectric energy
C. Geothermal energy
D. None of these
6 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
7 The dimension of linear inertia is:
A. MLT2
B. ML°T-2
C. ML°T°
D. MLT-1
8 The collision in which KE is conserved but momentum is not conserved is called:
A. Elastic collision
B. Inelastic collision
C. any these
D. None of these
9 A train cover 90 km in half an hour. the time taken by it to travel 15 km will be:
A. 20 minutes
B. 48 minutes
C. 10 minutes
D. 5 minutes
10 A rocket carries its own fuel in the form of
A. liquid only
B. liquid or solid
C. liquid and solid
D. liquid or solid and oxygen

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