Question

1. Displacement of a particle is given by the expression
x = 3t2 + 7t-9,
where
x is in meter and t is in seconds.
What is its velocity at t=0 s?​

Answer 1

Answer:

0m/s

Explanation:

x = 3t2 + 7t - 9

put t = 0

x = -9

x = displacement = -9m

velocity = displacement / time

v= -9/0

v=0m/s