WeBWorK using host: https://webwork-ptx.aimath.org, format: simple seed: 32

Suppose that an accelerating car goes from
0 mph to 61.4 mph in five seconds. Its
velocity is given in the following table, converted from
miles per hour to feet per second, so that all time
measurements are in seconds. (Note: 1 mph is 22/15 ft/sec.)
Find the average acceleration of the car over each of the first two
seconds.

(s)

0

1

2

3

4

5

(ft/s)

0.00

30.68

53.18

69.55

81.82

90.00

average acceleration over the first second = help (units)
average acceleration over the second second = help (units)