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

Velocity of a body changes if

Question # 3

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 # 4

Change in momentum is one second called.

Question # 5

The effect of applying a force on a moving body is to change

Question # 6

The slopes of the tangent at any point on the curve gives the value of the

Question # 7

The area under line velocity-time graph is numerically equal to the

Question # 8

When the mass of the colliding body is much larger than the mass of the body at rest, its velocity after collision.

Question # 9

The direction of the acceleration is the same as that of

Question # 10

The path described by a projectile is called its

Question # 11

The vertical and horizontal range will be equal id angle of projection is

Question # 12

The decrease in velocity per unit time is called:

Question # 13

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 # 14

A body walks to his school at a distance of 6 km with a speed of 2.5 km/h and walks back with a constant speed of 5 km/h. His average speed for round trip expressed in km/h is

Question # 15

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

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 In the above figures, tell which set is graphs shows that a body is moving uniform velocity:
A. (i) and (ii)
B. (ii) and (iii)
C. (i) and (iii)
D. (ii) and (iv)
2 A 5 kg mass is falling freely, the force acting on, it will be
A. 19.6 N
B. 9.8 N
C. 5 N
D. Zero
3 Which one of the following is dimensionless:
A. Acceleration
B. Velocity
C. Density
D. Angle
4 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
5 If the water falls from a dam into a turbine wheel 19.6 m below, then the velocity of water at the turbine, is (Take g=9.8 m/s2)
A. 9.8 m/s
B. 19.6 m/s
C. 39.2 m/s
D. 98.0 m/s
6 During the projectile motion, the horizontal component of velocity
A. changes with time
B. remains constant
C. becomes zero
D. decreases with time
7 A lift is descending at a constant speed V. A passenger in the lift drops a coin. The acceleration of the coin towards the floor will be
A. Zero
B. g
C. -g
D. V + g
8 At the top of the trajectory of a projectile the acceleration is
A. The maximum
B. The minimum
C. Zero
D. g
9 To get a resultant displacement of 10 m, two displacement vectors of magnitude 6 m and 8 m should be combined
A. Parallel
B. Antiparallel
C. At angle 60°
D. Perpendicular to each other
10 A body of mass 5 kg is acted upon by a constant force of 20 n for 7 seconds. The total change in momentum will be:
A. 10 NS
B. 100 NS
C. 140 NS
D. 200 NS

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