Is the formula for velocity the same as speed or different?

What kind of simple machine is a catapult?

Aparticle initially located at the origin has an acceleration of = 2.00ĵ m/s2 and an initial velocity of i = 8.00î m/s. find (a) the vector position of the particle at any time t (where t is measured in seconds), (b) the velocity of the particle at any time t, (c) the position of the particle at t = 7.00 s, and (d) the speed of the particle at t = 7.00

Can someone answer my last question i posted? on my last post? my hw is due tomorrow and i’m confused.