ECAT Pre Computer Science Chapter 3 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 3 Motion and Force

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ECAT Physics Chapter 3 Motion and Force

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Question # 1

Dimensions of velocity are

Question # 2

A ball is dropped from a height of 4.2 meters. To what height will take it rise if there is no loss of KE after rebounding?

Question # 3

A 5 kg mass is falling freely, the force acting on, it will be

Question # 4

The second law gives the relationship between

Question # 5

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

Question # 6

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

Question # 7

Which of the following statements for an object in equilibrium is not true?

Question # 8

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

Question # 9

A car moves for half of its time at 80 km/h and rest half of time at 40 km/h, The total distance covered is 60 km. What is the average speed of the car?

Question # 10

When a horse pulls a cart, the force that makes the horse run forward is the force exerted by

Question # 11

The product of force and time is called

Question # 12

A body falls freely from rest. It covers as much distance in the last second of its motion as covered in the first three seconds. The body has fallen for a time of

Question # 13

One newton is a force that produces an acceleration of 0.5 m/sec2in a body of mass:

Question # 14

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

Question # 15

A body is dropped from a tower with zero velocity, reaches ground in 4s. The height of the tower is about

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Sr.# Question Answer
1 The path (or trajectory) described by a projectile is
A. a parabola
B. a hyperbola
C. a circle
D. a straight line
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 When the surfaces are coated with a lubricant, then they
A. Stick to each other
B. Slide upon each other
C. Roll upon each other
D. None of these
4 The velocity given to a body to go out of the influence of earth's gravity is known as:
A. Terminal velocity
B. Orbital velocity
C. Escape velocity
D. None of these
5 A body of mass 5 kg is acted upon by a total change n momentum will be:
A. 10 NS
B. 100 NS
C. 140 NS
D. 200 NS
6 Acceleration in a body is always produced in the direction of :
A. Velocity
B. Weight
C. Force
D. Both B and C
7 Which quantity has the same dimension as that of impulse?
A. KE
B. Power
C. Momentum
D. Work
8 Which of the following four statements is false?
A. A body can have zero velocity and still be accelerated
B. A body can have a constant velocity and still have a varying speed
C. A body can have a constant speed and still have a varying velocity
D. The direction of the velocity of a body can change when its acceleration is constant
9 If the instantaneous velocity of a body does not change. the body is said to be moving with
A. average velocity
B. uniform velocity
C. instantaneous velocity
D. variable velocity
10 The projectile attains maximum horizontal range when it is projected at an angle of
A. 30°
B. 45°
C. 60°
D. 75°

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