Question # 1

If the velocity of body decreases with time then acceleration will be.

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Positive

Negative

Variable

Uniform

The average speed of cheetah is.

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60 kmh^-1

70 kmh^-1

75 kmh^-1

80 kmh^-1

Distance covered by freely falling downward body in first second.

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5 m

29.4 m

10 m

19.6 m

By dividing displacement of a moving body with time, we obtain

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Deceleration

Acceleration

Speed

Velocity

In graph referenc epoint is taken as.

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Origin

x-axis

variable

coordinates

a ball is thrown vertically upward. Its velocity at the highest point is.

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10 ms^-2

-10 ms^-1

Zero

none of them

A car starts from rest. It acquires a speed of 25 ms^-1after 20 s. The distance moved by the car during this time is

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31.25 m

250 m

5000 m

500 m

Independent quantities are taken on

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- x - axis

x -axis

-y-axis

y-axis

If an object is moving with constant speed then its distance time graph will be a straight line.

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Along time -axis

Along distance -axis

Inclined to time - axis

Parallel to time-axis

A train is moving at a speed 36 kmh^-1 Its speed expressed in ms^-1

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10 ms^-1

20 ms^-1

25m ms^-1

30 ms^-1

If an object is moving with a uniform changing speed then speed time graph .

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Variable

Parallel to time axis

Straight line

The quantities that describe completely by magnitude and direction are.

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Scalar

Vector

Base

Derived

Quantities between which a graph is plotted are called.

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Scalars

Vectors

Variables

None

A body has translatory motion if it moves along a.

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Straight line

Curved path

Line without rotation

Circle

A straight line parallel to time-axis ona distance -time graph tells that the object is.

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Moving with constant speed

In motion

At rest

Moving with variable speed

When two bodies are in motion then the velocity of one body relative to the other is called.

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Relative velocity

Uniform velocity

Variable velocity

Average velocity

Speedometer measures the.

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Acceleration

Velocity

Speed

All of these

Which of the following is a vector quantity?

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Distance

Power

Speed

Displacement

A change in position from point A to B is called.

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Distance

Velocity

Speed

Displacements

Rate of change of velocity is known as.

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Acceleration

Speed

Velocity

Distance

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