Question

Write two examples for each of the following.
1. Rectilinear motion ...........................................................................................................
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2. Curvilinear motion ..........................................................................................................
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3. Rotational motion ...........................................................................................................
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4. Periodic motion ..............................................................................................................
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5. Non-periodic motion .....................................................................................................
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Answer 1

1. Rectilinear motion
(i) A train moving on a straight track.
(ii) A car moving on a straight road.

2. Curvilinear motion
(i) A car taking a turn.
(ii) A child going down a slide.

3. Rotational motion
(i) Motion of blades of a rotating fan.
(ii) Motion of blades of a windmill.

4. Periodic motion
(i) To and fro motion of a pendulum.
(ii) Motion of hands of a clock.

5. Non-periodic motion
(i) A car moving on a road.
(ii) Birds gliding across the sky.