A 12-Kg Projectile Is Launched with an Initial Vertical Speed

question 23

Multiple Choice

A 12-kg projectile is launched with an initial vertical speed of 20 m/s. It rises to a maximum height of 18 m above the launch point. What is the change in mechanical energy caused by the dissipative (air) resistive force on the projectile during this ascent?

• A) −0.64 kJ
• B) −0.40 kJ
• C) −0.52 kJ
• D) −0.28 kJ
• E) −0.76 kJ

Understand the concept of least squares regression line.

Calculate the predicted value of a dependent variable for a given value of an independent variable using the regression line.

Interpret the slope of the regression line in the context of the data.

Understand the relationship between variables using correlation and regression analysis.

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