Question # 1

When a body is moving on a surface, the force of friction is called

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Static friction

Dynamic friction

Limiting friction

Rolling friction

Velocity is a

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scalar quantity

vector quantity

constant quantity

none of them

Distance traveled by a body falling from rest in the first, second and third second is in the ration of

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1 : 2 : 3

1 : 3 : 5

1 : 4 : 9

None of the above

In the above figures, tell which set is graphs shows that a body is moving uniform velocity:

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(i) and (ii)

(ii) and (iii)

(i) and (iii)

(ii) and (iv)

Find the total displacement of a body in 8 seconds starting from rest with an acceleration of 20 cm/s²

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0.064 m

640 cm

64 cm

64 m

The quantity F x t is called as

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momentum

velocity

acceleration

impulse

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?

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4.2 m

8.4 m

12.6 m

none of these

Range of a projectile is R, when the angle of projection is 30° . Then, the value of the other angle of projection for the same range, is

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45°

60°

50°

40°

In the expression F x t, the force F is

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total force

instantaneous force

average force

all of them

The distance covered by a body in unit time is called.

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Displacement

speed

Velocity

Both B and C

The artillery shells travel along parabolic paths under the influence of

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magnetic field

electric field

electromagnetic field

gravitational field

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

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10 s

20 s

5 s

40 s

An inertial frame of reference is that frame of reference in which

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a = 0

a > 0

a < 0

all of them

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

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relative motion

displacement

distance

acceleration

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

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its direction of motion only

its speed of motion only

both the direction and speed of motion

its inertia only

The direction of velocity is along the direction of

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distance

displacement

acceleration

all of them

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ECAT Physics Chapter 3 Motion and Force Online Test MCQs With Answers

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