Q1 Physics Velocity

So velocity and average velocity are defined the same when velocity is constant = d/ delta t. However, when velocity is not constant the average velocity has the same equation but how would we calculate the velocity? Since it is not constant would it just be having to take the average of velocities like (v1+v2+v3+v4)/4 ?

Q2 Physics Acceleration

MCAT PHYSICS AND MATH REVIEW Example 3-10: The velocity of an object changes from v, at time ; = 0 to v, at time to = 2 sec. Which of the following best illustrates the object's average acceleration during this time interval? A. B. C. D. Solution: By definition of average acceleration, we have a = Av V2 - V1 _ V2 - V 1 At to - t 2 s The direction of a is (always) the same as the direction of Av = v. - v. = v. + (-v,). The following dia- gram shows how we find v, + (-v ): Therefor choice B