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21/10/2021 7:38 pm
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(a) Write the formula for acceleration. Give the meaning of each symbol which occurs in it.
(b) A train starting from Railway Station attains a speed of 21 m/s in one minute. Find its acceleration.
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21/10/2021 7:41 pm
(a) Acceleration = \(\frac{Final\;velocity- Initial\;velocity}{Time\;taken}\)
a = \(\frac{v - u}{t}\)
(b) u = 0 m/s
v = 21 m/s
Time, t = 1 min = 60 sec
a = \(\frac{v - u}{t}\)
a = \(\frac{21 - 0}{60}\)
a = \(\frac{21}{60}\)
= 0.35 m/s2