Question

A point object moves in a straight line so that its
position X at any instant t is given by
x = 3t^2+4t-3 where x is in m. Instantaneous velocity of the particle at t = 2 s is
(1) 6 m/s
(2) 12 m/s
(3) 17 m/s
(4) 16 m/s​

Answer 1

Answer:

4

Explanation:

differentiating position with reapect to time gives velocity at instant.

dx/dt =6t+4

and dx/dt at t=2 is 16 which is velocity.