Physics ECAT Pre Engineering Chapter 3 Motion and Force

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

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

Question # 2

The dimension of linear inertia is:

Question # 3

The motion of a projectile is

Question # 4

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

Question # 5

Change in momentum is one second called.

Question # 6

A change in position of a body from its initial position to its final position is known as

Question # 7

In an elevator moving vertically up with an acceleration 'g' the force exerted on the floor by a passenger of mass M is

Question # 8

The direction of velocity is along the direction of

Question # 9

The motion of a body in a straight line is the motion in

Question # 10

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

Question # 11

A certain force gives an acceleration of 2 m/sec2to a body mass 5 kg. The same force would give a 20 kg object an acceleration of:

Question # 12

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

Question # 13

A body of mass 5 kg is acted upon by a total change n momentum will be:

Question # 14

Rocket engines lift a rocket from the earth surface, because hot gas with high velocity

Question # 15

To get a resultant displacement of 10 m, two displacement vectors of magnitude 6 m and 8 m should be combined

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 When the total displacement is divided by total time taken, we get:
A. Velocity
B. Average speed
C. Average velocity
D. None of these
2 If the acceleration of a body is not uniform, then velocity-time graph will be:
A. Curve
B. Straight line
C. Sphere
D. All of these
3 If an iron ball and a wooden ball of the same radius was released from a height 'h' in vacuum, then time taken by both of them to reach ground will be
A. Unequal
B. Exactly equal
C. Roughly equal
D. Zero
4 The expression F x t is called impulse if the time 't' is
A. zero
B. very large
C. very small
D. infinite
5 Which quantity has the same units as impulse
A. force
B. work
C. linear momentum
D. acceleration
6 A body of weight 1 N has a kinetic energy of 1 joule when its speed is:
A. 1.46 m sec-1
B. 2.44 m sec-1
C. 3.42 m sec-1
D. 4.43 m sec-1
7 At the top of the trajectory of a projectile the acceleration is
A. The maximum
B. The minimum
C. Zero
D. g
8 Root out the conventional source of energy:
A. Energy from blomass
B. hydroelectric energy
C. Geothermal energy
D. None of these
9 Force is a:
A. Scalar quantity
B. Base quantity
C. Derived quantity
D. None of these
10 Which one of the following is dimensionless:
A. Acceleration
B. Velocity
C. Density
D. Angle

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