(a) Give reason for the following :
(i) A sheet of paper falls slower than when it is crumpled into a ball.
(ii) A body weighs more at the poles than at the equator.
(b) What is meant by the statement that acceleration due to gravity is 9.8 ms-2?
CBSE Class IX Science SA 2 (3 Marks)
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13
i) it is falling with velocity of ball
ii)at poles the weight of the body is more aa gravitational force is more and is at centre
iii) if a=9.8m/s2 means that value of g is 9.8
ii)at poles the weight of the body is more aa gravitational force is more and is at centre
iii) if a=9.8m/s2 means that value of g is 9.8
Answered by
4
(a) (i) It is due to resistance offered by air on a sheet of paper.
(ii) gp > ge because Re > Rp.
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