Question

The displacement of a particle is given by y = a + bt + ct² – dt⁴ The initial velocity and acceleration are respectively
(a) b, –4d
(b) –b, 2c
(c) b, 2c
(d) 2c, –4d

Answer 1

Explanation:

y = a + bt + ct² – dt⁴

v = b+2ct–3dt^3

v = b. at t=0

a=2c–9dt^2

a=2c. at t=0