ONE QUESTION AT A TIME, PLEASE AS PER THE RULES
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u = 60 rpm = 60 * 2*pi / 60 = 6.283 rad/sec
v = u + at
a = u/t
a = 6.283 / 25
a = 0.2513 m/s2
so
(a) v = u + at
v = 6.283 - 0.2513 * 10
v = 3.769 m/s
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(b) s = 6.283 * 25 - 1/2 * 0.2513 * 252
s = 78.54 rad
so,
revolutions = 78.54 / 2*pi
revolutions = 12.5 revs
A celling fan with 80 em diameter bledes th tummi t 11. minnute). wt stops 25...