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

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

Question # 2

The range of projectile is 50 m whenθ is inclined with horizontal at 15°. What is the range whenθ becomes 45°?

Question # 3

Newton published laws of motion in his famous book "principia" in

Question # 4

A typical rocket ejects the burnt gases at speeds over

Question # 5

The three equation of motions are useful only for

Question # 6

Acceleration of a body is negative if the velocity of the body is

Question # 7

When a shell explodes in mid-air, its fragments fly off in

Question # 8

When we consider the average velocity of a body, then the body is moving in

Question # 9

The linear momentum of the body is defined as

Question # 10

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

Question # 11

A ball is dropped vertically down and it takes time t to reach the ground. At time t/2

Question # 12

Distance covered by a freely failing body n the first second of its motion will be:

Question # 13

A ball is thrown upwards with a velocity of 100 m/s. It will reach the ground after

Question # 14

If m is the mass of the gases ejected per second with velocity v relative to the rocket of mass M, then the acceleration of rocket is

Question # 15

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

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 The SI units of momentum is
A. kg m s-2
B. kg ms
C. kg m s2
D. N-s
2 Which of the following is not a projectile
A. a bullet fired from a gun
B. a space ship
C. a football in air
D. an artillery shell
3 The motion of a body in a straight line is the motion in
A. one dimension
B. two dimension
C. three dimension
D. four dimension
4 Ethanol (alcohol) as a type of:
A. Electric fuel
B. Bio fuel
C. Nuclear fuel
D. None of these
5 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
6 Slope of velocity-time graph represents:
A. Acceleration
B. Speed
C. Torque
D. Work
7 The magnitude of the force producing an acceleration of 10 m/sec2in a body of mass 500 grams is:
A. 3 N
B. 4 N
C. 5 N
D. 6 N
8 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
9 When body moves with increasing acceleration, its velocity time graph is a
A. straight line
B. horizontal straight line
C. vertical straight line
D. curve
10 When a body is moving on a surface, the force of friction is called
A. Static friction
B. Dynamic friction
C. Limiting friction
D. Rolling friction

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