HW 5: Work and Exercise 1 of 1
POSSIBLE POINTS: 100
A number of students have done some squats for their PE class. Now you are tasked with calculating how much work
they performed while doing the squats. (Warning, MANY assumptions coming into play)
Total Work performed Force' Distance Number of squats
Student weight in Newtons (N)
Half of height in meters (m)
Number of squats
Work performed (J)
500
1.01
19
251
0.88
102
850
0.68
1.721
<
0.99
2
825
326
201
20,000
0.77
77
35,000
1,000
1.15
230,000
I Review

An airplane flies eastward and always accelerates at a constant rate. at one position along its path it has a velocity of 34.3 m/s, it then flies a further distance of 40100 m and afterwards its velocity is 47.5 m/s. find the airplane\'s acceleration and calculate how much time elapses while the airplane covers those 40100 m.

In order of decreasing light-transmitting capabilities of materials, which is the correct sequence? a. transparent -> translucent -> opaque b. opaque -> transparent -> translucent c. opaque -> translucent -> transparent d. translucent -> transparent -> opaque

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?