Question # 1

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

The artillery shells travel along parabolic paths under the influence of

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magnetic field

electric field

electromagnetic field

gravitational field

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)

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9.8 m/s

19.6 m/s

39.2 m/s

98.0 m/s

Slope of velocity-time graph represents:

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Acceleration

Speed

Torque

Work

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

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force

energy

momentum

power

Swimming becomes possible because of______law of motion.

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First

Second

Third

None of these

For a given angle of projection, if the time of flight of a projectile is doubled, the horizontal range will increases to

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Four times

Thrice

Once

Twice

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

If the velocity of the body decreases non-uniformly then the slope of the velocity-time graph will have

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different values

same values

zero valves

constant valves

In equation F=ma, then mass 'm' is

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rest mass

variable mass

inertial mass

gravitational mass

The motion of a projectile is

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one dimension

two dimension

three dimension

all of them

Graphs which are used to illustrate the variation of velocity of an object with time are called

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distance time graphs

speed time graphs

velocity time graphs

acceleration time graphs

What must be changing when a body is accelerating uniformly?

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the force acting on a body

the velocity of the body

the mass of the body

the speed of the body

Blomass includes:

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Crop residue

Natural vegetation

Animal dung

All of these

A body of mass 1.0 kg is falling with an acceleration of 10 m/s². Its apparent weight will be (g=10 m/s²)

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1.0 kg wt

2.0 kg wt

0.5 kg wt

Zero

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

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

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