I'm reviewing some of our home work for our midterm this Monday and when I was reading the section on vector functions the part of the directions that kind of lost me is when they said:
"...Write the particle's velocity at that time as the product of its speed and direction."
I found the velocity vector
and at time t=0 I found that is
Then found the accelertion vector
and at time t=0 I get
..My question is : What am I suppose to write down when it asks to write the particles velocity as a product of its speed and direction?