Question : Starting from rest, acceleration of a particle is 𝑎 = 2(𝑡 − 1). The velocity of the particle at 𝑡 = 5𝑠 is
(A) 15 𝑚/𝑠𝑒𝑐
(B) 25 𝑚/𝑠𝑒𝑐
(C) 5 𝑚/𝑠𝑒𝑐
(D) None of these
Answer : option (A)
Solution :
Starting from rest, acceleration of a particle is 𝑎 = 2(𝑡 − 1). The velocity of the particle at 𝑡 = 5𝑠 is
with
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