Question

A particle moves along x-axis in such a way that its co-ordinate (x) varies with time (t) according to the
expression x = 2-5t + 6t2. Its initial velocity is:
(a)-3 m s-1
(b)-5 ms-1
(c) 2 m s-1
(d) 3 ms.1
plz solve this on paper​

Answer 1

Explanation:

The displacement is given as: y=ut+ 21 at 2 where,

u is the initial velocity

and

a is the accelerationComparing with given expression: y=−5t+6t 2 +2u=−5m/s, a=12m/s 2 So initial velocity is −5 m/s

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Answer 2

Answer:

option (c) is correct

Explanation:

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