Question

Fill in the blanks. (a) If a ball is released from the terrace of a building, it comes down in ........... motion. On the other hand, it reaches the ground in ........... motion if it is thrown with force away from the terrace in a direction parallel to the terrace. (b) The motion of an aeroplane on the runway before take-off is.......... . (c) The kite looking for its prey flies with .......... motion in the sky. (d) Children sitting in a rotating giant wheel have ........... motion, while those sitting in a merry-go-round have a ........... motion. (Linear, non-linear, circular, uniform linear, non-uniform linear, uniform circular, non-uniform circular, random)

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Solution

(a) If a ball is released from the terrace of a building, it comes down in non-uniform linear motion. On the other hand, it reaches the ground in non-linear motion if it is thrown with force away from the terrace in a direction parallel to the terrace. (b) The motion of an aeroplane on the runway before take-off is non-uniform linear motion . (c) The kite looking for its prey flies with random motion in the sky. (d) Children sitting in a rotating giant wheel have non-uniform circular motion, while those sitting in a merry-go-round have a uniform circular motion.

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