Question

The displacement `s` of a point moving in a straight line is given by:
`s = 8 t^(2) + 3t - 5`
`s` being in cm and `t` in s. The initial velocity of the particle is:
A. 3 cm/s
B. 16 cm/s
C. 19 cm/s
D. zero

Answer 1

Correct Answer - A
`v = (ds)/(dt) = (d)/(dt) (8 t^(2) + 3t - 5) = 16 t + 3`
Initial velocity (time, `t = 0`) is given by `u = 3 cm//s`