Copyright © Michael Richmond.
This work is licensed under a Creative Commons License.
Question 1:
The Ford RS200 "Evolution" vehicle accelerated from 0 to 60 miles per hour in 3.3 seconds. What is the magnitude of its average acceleration? (Express your answer in either feet or meters, and seconds).
Answer: We must convert the final velocity from miles per hour to
feet per second or meters per second:
miles 5280 feet 1 hour feet
60 ------- * --------- * -------- = 88 -----
hour 1 mile 3600 sec sec
miles 1609 meter 1 hour meter
60 ------- * --------- * -------- = 27 -----
hour 1 mile 3600 sec sec
Now, we can calculate the acceleration:
88 feet/sec - 0 feet/sec
a = ------------------------- = 27 ft/s^2
3.3 sec
or
27 meter/sec - 0 meter/sec
a = --------------------------- = 8.1 m/s^2
3.3 sec
Copyright © Michael Richmond.
This work is licensed under a Creative Commons License.