STD IX - Science (II) | Take the Quiz

Rate of change of displacement is called

A) Speed

B) acceleration

C) Velocity

D) Deceleration

Acceleration is a vector quantity, which indicates that its value

A) can be positive, negative or zero

B) is always positive

C) is always negative

D) is zero

An example of a body moving with constant speed but still accelerating is

A) A body moving with constant speed in a circular path

B) A body moving with constant speed on a straight road

C) A body moving in a helical path with constant speed

D) A body moving with constant speed on a straight railway track

If a bus takes a sharp turn then passengers inside move outward due to

A) force

B) inertia

C) normal force

D) friction

The physical quantity, which is the measure of inertia, is ________

A) density

B) weight

C) force

D) mass

When an object is moving with uniform velocity, what is its acceleration?

A) zero

B) uniform

C) non-uniform

D) negative

What does the distance-time graph indicate?

A) uniform speed

B) body is at rest

C) non-uniform speed

D) variable speed

The S.I. Unit of force is ___________.

A) erg

B) joule

C) newton

D) dyne

Force with which earth attracts bodies towards its center is called

A) mass

B) inertia

C) gravitational force

D) weight

Displacement is a ________ quantity.

A) scalar

B) vector

C) derived

D) linear

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STD IX - Science (II)

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