2.7 ms-2
Reason – Given,
u = 0; v = 54 ms-1; t = 20 s; a = ?
Using, v = u + at
or, a = v-u\over t
or, a = 54-0\over 20 = 2.7 ms-2 .
Hence, acceleration = 2.7 ms-2.
Question
A car acquires a velocity of 54 ms-1 in 20 s starting from rest, then its acceleration is: (i) 5.4 ms-2 (ii) 2.7 ms-2 (iii) 7.2 ms-2 (iv) 2.0 ms-2
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