a) A body starts from rest and accelerates to attain a speed of 72 kmh-1 n 20 s. Then it retards to come to
rest after covering a distance of 80 m. Calculate the acceleration as well as the retardation of the body.
(b) A satellite while revolving around the earth completes one revolution in 1 hour and 30 minutes.
What is the angular speed of satellite?
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a) u=0
v=72 kmph=20mps
t=20s
a=v/t-u/t
=20/20
=1mps
v=72 kmph=20mps
t=20s
a=v/t-u/t
=20/20
=1mps
khusshimittal22:
and b) part
how to solve that
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