# Question on velocity at T1 and T2 problem

#### njt84572

1. The problem statement, all variables and given/known data

The acceleration of a bus is given by a(t)=at where = 1.23 is a constant.
If the bus's velocity at time = 1.05 is 4.90 , what is its velocity at time = 2.01 ?
If the bus's position at time = 1.05 is 6.09 , what is its position at time = 2.01 ?

2. Relevant equations

a=v2-v1/t2-t1

3. The attempt at a solution
Tried to use that equation to solve for V2 and got 6.08 as my answer, however masteringphysics said I was incorrect

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#### Doc Al

Mentor
The acceleration of a bus is given by a(t)=at where = 1.23 is a constant.
Something got left out in your cut and paste. Did you mean that a(t) = 1.23t ?
a=v2-v1/t2-t1
That defines average acceleration. Not useful here. (Unless I have guessed wrong about your problem.)

Instead, given the acceleration function how can you calculate a velocity function? Think calculus!

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