Question
What does a speedometer record-average speed or instantaneous speed?
Solution
Instantaneous speed.
State which of the following are examples of one, two or three dimensional motion:
(a) A kite flying in the sky.
(b) The earth revolving around the sun.
(c) A train moving along the equator of the earth in clockwise direction.
(d) Accelerated motion of a particle in a straight line.
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