Question # 1

The consumption source if energy is:

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Energy from blomass

Hydroelectric energy

Geothermal energy

None of these

A person is sitting in a traveling train and facing the engine. He tosses up a coin and the coin falls behind him. It can be concluded that the train is

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Moving forward and gaining speed

Moving forward and losing speed

Moving forward with uniform speed

Moving backward with uniform speed

For maximum linear distance of travel, a projectile must be fired at an angle of

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0°

45°

90°

60°

A motorist travels A to B at a speed at 40 km/h and returns at speed of 60km/h. His average speed will be

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40 km/h

48 km/h

50 km/h

60 km/h

The decrease in velocity per unit time is called:

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Variable Acceleration

Average Acceleration

Retardation

None of these

The dimension of linear inertia is:

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MLT²

ML⁰T^-2

ML⁰T⁰

MLT^-1

Change in momentum is one second is called:

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Impulse

Force

Energy

Work

The mass of a body measured by a physical balance in a lift at rest is found to be m, if the lift is going up with an acceleration a, its mass will be measured as

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m (1 - a/g)

m (1 + a/g)

m

Zero

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

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24/13

10/3

3

4,8

A railway engine (mass 10⁴kg) is moving with a speed of 73 km/h. The force which should be applied to bring it to rest over a distance of 20 m is

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3,600 N

7,200 N

10,000 N

100,000 N

The velocity of a projectile is maximum

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at the point of projection

just before striking the ground

at none of them

at both 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

Unit of impulse in

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Newton

Kg m

Kg m/s

Joule

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

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Displacement

speed

Velocity

Both B and C

When the surfaces are coated with a lubricant, then they

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Stick to each other

Slide upon each other

Roll upon each other

None of these

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

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