average velocity positions you found above d) Take the derivative of the position formula to find the velocity formula. e) What is the instantaneous velocity of the car at 3s and 6s?

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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9. (a) and (b) are already solved.

(c), (d), and (e) need to be solved.

9.
The position of a car is given by the formula x(t) = -9+ 2t
a)
What units must the -9 and the 2 have so that x(t) has units of meters?
2 is m/s^2 and -9 is m (meters)
What is the position of the car at t=2s and t=7s?
b)
t=2s is -1 and t=7s is 89|
c)
What is the average velocity of the car as it moves between the two positions you
found above
d) Take the derivative of the position formula to find the velocity formula.
e)
What is the instantaneous velocity of the car at 3s and 6s?
Transcribed Image Text:9. The position of a car is given by the formula x(t) = -9+ 2t a) What units must the -9 and the 2 have so that x(t) has units of meters? 2 is m/s^2 and -9 is m (meters) What is the position of the car at t=2s and t=7s? b) t=2s is -1 and t=7s is 89| c) What is the average velocity of the car as it moves between the two positions you found above d) Take the derivative of the position formula to find the velocity formula. e) What is the instantaneous velocity of the car at 3s and 6s?
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