We can express the velocity as a function of time, v(t), of a car as v(t) = (8.3 m/s) + (6.1 m/s2)t - (4.2 m/s3)t2. What can you say about the average acceleration of the car between t = 1.0 s and t = 2.0 s?

Question

A.13 m/s2


B.-6.3 m/s2


C.-13 m/s2


D.0 m/s2


E. 15 m/s2

Answer 1

average acceleration=changevelocity/time
= (v(2)-v(1))/(2-1)

Answer 2

what do i plug in for the equation?

Answer 3

v(2)= the velocity at time 2 from your equation. v(1) is velocity at time 1.

If you are looking to learn physics by plugging in numbers to formulas, you are headed for a long year.