Question # 1

What will be the ratio of the distance moved by a freely falling body from rest in 4th and 5th seconds of journey?

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4 : 5

7 : 9

16 : 25

1 : 1

The entity which measures the quantity of motion in a body is called

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force

energy

momentum

power

The direction of velocity is along the direction of

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distance

displacement

acceleration

all of them

A body whose momentum is constant must have constant

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Acceleration

Velocity

Force

None of these

When a bicycle is in motion, the frictional forces exerted by the ground are

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In the forward direction on both the wheels

In the backward direction on both the wheels

In the forward direction on the front wheel and the backward direction on the rear wheel

In the backward direction on the front wheel and the forward direction on the rear wheel

Work done along a closed path in a gravitational force is:

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maximum

Minimum

Zero

Unity

Which one of the following is dimensionless.

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Acceleration

Velocity

Density

Angle

According to the law of conservation of linear momentum, the total linear momentum of an isolated system

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increases

decreases with time

remains constant

none of them

Acceleration of a body is positive, if the velocity of the body is

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constant

increasing

decreasing

none of them

Acceleration produced in a body by a force varies

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inversely as the applied force

directly as the applied force

directly as the mass of the body

none of them

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

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Decreases

Increases

Remains constant

None of these

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

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Displacement

speed

Velocity

Both B and C

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

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3 s

5 s

7 s

9 s

The magnitude of the force producing an acceleration of 10 m/sec²in a body of mass 500 grams is:

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3 N

4 N

5 N

6 N

The path followed by the projectile is known as:

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Cycle

Hyperbola

Trajectory

Route

A cold soft drink is kept on the balance. When the cap is opened, then the weight

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Increases

Decreases

First increases, then decreases

Remains same

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

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