Question

4.
Velocity of a particle is varying with time t as, V = 3t-2t²
Find acceleration at t = 1 second.
(a) 2 m/s²
(b) 3 m/s²
(c) -1 m/s²
(d) 4 m/s²
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Answer 1

Answer:

i am not shore about my answer = -1 m/s