Homework Help: physics

Posted by marybeth on Sunday, January 22, 2012 at 11:24pm.

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!

physics - drwls, Monday, January 23, 2012 at 2:01am
<< 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?

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