Velocity problems regarding vectors

[amit25]

Homework Statement

Spaceship initially at rest as measured,experiences constant acceleration of a=(1,2,3)m/s^2?

what is the velocity,after 5 seconds,
and speed after 5 seconds
and position after 5 secs
what is the distance it has traveled in 5secs

Homework Equations

v=at not sure what else..

The Attempt at a Solution

i think i got velocity my answer was (5,10,15)m/s not sure how i should go about the rest

 

[Filip Larsen]

Your velocity is correct.

How do you find speed (a scalar) when you know velocity (a vector)? hint: speed is the magnitude of the velocity vector.

Regarding position, can you establish an equation that describes the linear position of a single coordinate when the initial speed is zero and the acceleration is constant?