Driving home from school one day, you spot a ball rolling out into the street (figure 5-21). you brake for 1.20 s, slowing your 950-kg car from 16.0 m/s to 9.50 m/s.
a) what was the average force exerted on your car during braking?
b) how far did you travel while braking?

Natural forces that can alter ecosystems include seasons and climate changes. t or f

An electric current in a wire will push or pull on a permanent magnet. which statement best explains how an electric current creates an electromagnetic force on another magnet?

7. see worksheet 1 for values of variables x1, x2 and x3 and answer the following questions: a. for each variable find the mean, median, coefficient of skewness, range and population standard deviation. b. compared to variable x1, how are the mean and median affected by extreme values (outliers) seen in x2 and x3. c. is the median or mean the better measure of location for x2 and x3? explain. d. explain the differences in the magnitudes of the skewness coefficients for the three variables. e. what is the relationship between the range and standard deviation looking across the three variables?