FIGURE 8-8 -6 J of Work Is Needed to Push an Object

question 19

Multiple Choice

FIGURE 8-8
-6 J of work is needed to push an object of mass 2 kg from point A to point B of the inclined plane as shown in Figure 8-8. If the angle of inclination is 30°, the height of the plane is h, what is the length of the inclined plane? Use g = 10 m/s².

• A) 0.6 m
• B) 0.3 m
• C) 10 m
• D) 6 m
• E) 3 m

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Definitions:

Variability

The extent to which data points in a data set differ from each other and from the mean of the dataset.

Standard Deviation

A measure of the amount of variation or dispersion of a set of values, indicating how much the individual data points differ from the mean.

Variance

A measure of the dispersion of a set of data points in a dataset, indicating how far each data point lies from the mean.

Variability

Refers to the extent to which data points in a statistical distribution or data set diverge from the average value.