physics
posted by marybeth .
Assume a canister in a straight tube moves with a constant acceleration of 3 m/s2 and has a velocity of 13.5 m/s at t = 0.00 s.
(a) What is its velocity at t = 1.00 s?
v = m/s
(b) What is its velocity at t = 2.00 s?
v = m/s
(c) What is its velocity at t = 2.5 s?
v = m/s
(d) What is its velocity at t = 4.00 s?
v = m/s
(e) Describe the shape of a graph of velocity versus time for this parcel of air.
(f) What two things must be known at a given time to predict the canister's velocity at any later time?
I am lost here, I've been working on this for hours!

<< I've been working on this for hours! >>
During those hours, have you tried using the equation
V(t)= Vo + a*t ,
where Vo is the initial velocity and a is the acceleration rate?