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 path (or trajectory) described by a projectile is

Question # 2

The projectile motion is composed of

Question # 3

When a body is moving with uniform positive acceleration, the velocity- time graph is a straight line. Its slope is

Question # 4

Body which falls freely under gravity provides good example of motion under:

Question # 5

A body whose momentum is constant must have constant

Question # 6

Which one of the following is dimensionless:

Question # 7

Which quantity has the same dimension as that of impulse?

Question # 8

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 # 9

A particle of mass 0.5 g moving along x-axis is located of x1= 15 m at t1= 5s and x2= 33 m at t2= 13s its average velocity is

Question # 10

If the acceleration of a body is negative, then slope of the velocity-time graph will be:

Question # 11

Root out the conventional source of energy:

Question # 12

The path described by a projectile is called its

Question # 13

A body of weight 1 N has a kinetic energy of 1 joule when its speed is:

Question # 14

The horizontal range of projectile, at a certain place, depends upon

Question # 15

The consumption of energy by a 1000 watt heter in half an hour is:

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 The decrease in velocity per unit time is called
A. deceleration
B. acceleration
C. uniform acceleration
D. variable acceleration
2 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
3 For a given angle of projection, if the time of flight of a projectile is doubled, the horizontal range will increases to
A. Four times
B. Thrice
C. Once
D. Twice
4 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?
A. 4 m/s
B. 2 m/s
C. 8 m/s
D. 1 m/s
5 Work done along a closed path in a gravitational force is:
A. maximum
B. Minimum
C. Zero
D. Unity
6 The path (or trajectory) described by a projectile is
A. a parabola
B. a hyperbola
C. a circle
D. a straight line
7 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
8 If the velocity time graph is a straight line parallel to the time-axis, then it means:
A. The body is moving with uniform velocity
B. The body is moving with uniform acceleration
C. The body is at rest
D. None of these
9 Swimming is based on the principle of
A. Newton's 1st law
B. Newton's 2nd law
C. Newton's 3rd law
D. All
10 If rope of lift breaks suddenly. The tension exerted by the surface of lift is (a=Acceleration of lift)
A. mg
B. m (g+a)
C. m (g - a)
D. 0

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