Answer the following questions :
Q. Answer the following questions :
(i) State the type of motion shown by a freely falling stone.
(ii) When a stone is thrown vertically upwards its velocity is continuously decreased. Why ?
(iii) Give an example of a motion in which average velocity is zero, but the average speed is not zero.
Ans. (i) Uniform motion.
(ii) The stone is continuously being attracted by the earth, this causes retardation in the stone’s motion, hence its velocity goes on decreasing continuously.
(iii) Uniform circular motion.
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