Question

question 19
1 pts
the center of mass of a projectile will follow a ______ path whenever gravity is the only external force acting on the object.

question 20
1 pts
in general, the center of mass is located about ______ above the groin area.
1 inches
10 inches
1 inches
6 inches

Explanation:

For Question 19, when gravity is the only external - force on a projectile, its center of mass follows a parabolic path due to the combination of horizontal (constant - velocity) and vertical (constant - acceleration) motions. For Question 20, in general, the center of mass of a human body is located about 10 inches above the groin area.

Answer:

Question 19: parabolic
Question 20: 10 inches