Question

Does a real automobile have constant acceleration?
Measured data for a Porsche 944 Turbo at maximum acceleration is as follows:

(a) Convert the velocities to m/s, then make a graph of velocity versus time.

t(s) V(mph)
0 0
2 28
4 46
6 60
8 70
10 78

(b) Draw a smooth curve through the points on your graph, then use your graph to estimate the car's acceleration at 2.0 s and 8.0 s. Give your answer in SI units. (Hint: remember that acceleration is the slope of the velocity graph)

a at 2.0s = m/s²
a at 8.0s = m/s²