Question

The vector position of a particle varies in time according to the expression r⃗ =3.00i^−6.00t2j^ where r is in meters and t is in seconds.

Determine the velocity of the particle at t = 2.0 s.

Answer 1

v(t) = 0i - 12j
v(2) = -24j

Answer 2

oops. make that v=0i - 12t j