week2quiz2version3

course phy121

11cm/s - 8cm/s = 3cm/s = 'dve11cm/s + 8cm/s / 2 = 9.5cm/s = Ave = average velocity

3cm/s / 4s = .75cm/s^2 = average acceleration

9.5cm/s * 4s = 38cm = displacement"

You didn't include the problem but for v0 = 8 cm/s, vf = 11 cm/s and `dt = 4 s this is a correct and well-reasoned solution.