Question # 1

When two protons are brought closer potential energy of both of them:

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Increases

Decreases

Remains same

None of these

At the top of the trajectory of a projectile the acceleration is

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The maximum

The minimum

Zero

g

If m means mass of gases objected per second from a rocket and v shows the change in velocity, than mv is named as:

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Force

Energy

work

impulse

A body moving with uniform velocity has

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positive acceleration

negative acceleration

infinite acceleration

zero acceleration

The velocity given to a body to go out of the influence of earth's gravity is known as:

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Terminal velocity

Orbital velocity

Escape velocity

None of these

When body moves with increasing acceleration, its velocity time graph is a

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straight line

horizontal straight line

vertical straight line

curve

Slope of velocity time graph represents:

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Acceleration

Speed

Torque

Work

The direction of velocity is along the direction of

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distance

displacement

acceleration

all of them

Ethanol (alcohol) as a type of:

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Electric fuel

Bio fuel

Nuclear fuel

None of these

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

A typical rocket consists of fuel

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more than 60% of launch mass

less than 60% of launch mass

less than 80% of launch mass

more than 80% of launch mass

Root out the conventional source of energy:

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Energy from blomass

hydroelectric energy

Geothermal energy

None of these

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

Distance covered by a freely failing body n the first second of its motion will be:

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4.9 m

9.8 m

19.6 m

29.4 m

Velocity is a

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scalar quantity

vector quantity

constant quantity

none of them

One KWh is equal to:

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3.6 x 10²J

3.6 KJ

3.6 x 10¹KJ

3.6 MJ

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

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