Question

the displacement x of a particle is dependent on time t in the fpllowing relation:3+8t+7t2 . find the acceleration and velocity at t=2s

Answer 1

Explanation:

Distancex=3+8t+7t

2

,

Velocity v=

dt

dx

=8+14t

v

t=2s

=8+14×2=36ms

−1

,

a=

dt

dv

=14ms

−2