Unit of speed is__________

(a)

m

(b)

s

(c)

kg

(d)

m/s

Which among the following is an oscillatory motion?

(a)

Rotation of the earth about its axis

(b)

Revolution of the moon about the earth

(c)

To and fro movement of a vibrating string

(d)

All of these.

Periodic motion among the following is___________

(a)

sabling swing in wind

(b)

revolution of the moon around the earth

(c)

a coconut falling from a tree

(d)

paper flight moving

Usain Bolt crossed 100 metre in____________seconds and made a world record

(a)

9.58

(b)

9.83

(c)

9.85

(d)

9.38

_________________are robots scaled down to microscopic size in order to put them with very small spaces to perform a function

(a)

car robots

(b)

home robots

(c)

game robots

(d)

nanobots

Motion of a potter’s wheel is an example for__________ motion.

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  Rotatory

When an object covers equal distances in equal interval of time, it is said to be in __________motion.

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  Uniform

______________are push or pull by an animate or inanimate agency

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forces

Application of force in object results in____________

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Expansion or contraction

Fast oscillations are referred to as____________ motion

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Vibrations

Motion repeated in equal intervals of time is called__________

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Perodic motion

To and fro motion is called oscillatory motion

(a) True

(b) False

Vibratory motion and rotatory motion are periodic motions

(a) True

(b) False

Vehicles moving with varying speeds are said to be in uniform motion

(a) True

(b) False

Robots will replace human in future

(a) True

(b) False

(1)

Rotatory motion

(2)

Circular motion

(3)

Linear motion

(4)

Oscillatory motion

(5)

Linear and rotatory motion