Concept explainers
DATA The table gives automobile performance data for a few types of cars:
Make and Model (Year) | Mass (kg) | Time (s) to go from 0 to 60 mph |
Alpha Romeo 4C (2013) | 895 | 4.4 |
Honda Civic 2.0i (2011) | 1320 | 6.4 |
Ferrari F430 (2004) | 1435 | 3.9 |
Ford Focus RS500 (2010) | 1468 | 5.4 |
Volvo S60 (2013) | 1650 | 7.2 |
*Source: www.autosnoui.com
(a) During an acceleration of 0 to 60 mph. which car has the largest average net force acting on it? The smallest? (b) During this acceleration, for which car would the average net force on a 72.0-kg passenger be the largest? The smallest? (c) When the Ferrari F430 accelerates from 0 to 100 mph in 8.6 s. what is the average net force acting on it? How does this net force compare with the average net force during the acceleration from 0 to 60 mph? Explain why these average net forces might differ. (d) Discuss why a car has a top speed. What is the net force on the Ferrari F430 when it is traveling at its top speed, 196 mph?
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