Question

Which of the following ideas is helpful in understanding projectile motion?

• A. $v_{x}^{2} + v_{y}^{2}$= constant
• B. Acceleration is +g when the object is rising and – g when falling
• C. In the absence of friction the trajectory will depend on the object’s mass as well as its initial velocity and launch angle
• D. The horizontal motion is independent of the vertical motion

Answer 1

Answer: (D)

The horizontal motion is independent of the vertical motion

Answer 2

According to law of independence of directions motion of a body along three mutually perpendicular directions is independent of each other.