During a projectile path, air friction affects:
Correct answer: D. Both horizontal and vertical motions
- A. Initial velocity of launch
- B. Horizontal motion only
- C. Vertical motion only
- D. Both horizontal and vertical motions
Explanation
Air friction, also known as air resistance or drag, affects both the horizontal and vertical motions of a projectile. It acts in the opposite direction to the motion of the projectile, reducing its speed and altering its trajectory in both dimensions. Therefore, option D is selected.
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Displacement, velocity and acceleration describe motion, including the horizontal and vertical components of projectile motion. The chapter connects these quantities with Newton's laws, momentum and impulse, then applies conservation of momentum to collisions, distinguishing elastic collisions from inelastic ones.
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