Question

The vector position of a particle varies in time according to the expression r(vector)= 9.00 i(with arrow above)− 7.60t2 j(with arrow above) where r(vector) is in meters and t is in seconds.

Calculate the particle's position and velocity at t = 2.00 s.
r(vector)=___m

Answer 1

the answer will be an equation

Answer 2

r = -30.4tj

Answer 3

how did u get that?

Answer 4

thats the vector
i got that right

Answer 5

i need the r(vector)

Answer 6

v = dr/dt = 0 i + -15.2t j.
v= -15.2(2)j
=-30.4j
\[r =\int\limits_{}^{}v.dt=\int\limits_{}^{}-30.4 .dt=-30.4tj\]

Answer 7

i got that for v tho..its for r as well?

Answer 8

its wrong