Question

Describe three factors those affect the trajectory of a projectile.

Hint:

To remember the factors that shape a projectile's path, use the acronym AVG: Angle of release, initial Velocity, and the downward pull of Gravity.

Answer 1

Step 1: Understanding Projectile Trajectory:
A projectile is any object launched into space that moves under the influence of gravity and air resistance. The flight path it follows is called its trajectory, which typically forms a parabolic curve.

Step 2: Describing Three Key Influencing Factors:

• Angle of Projection Launch Angle:
The angle at which an object is launched relative to the horizontal plane determines the shape of its flight path. In a vacuum, a $45^\circ$ angle provides the maximum horizontal distance. In real-world sports conditions, factors like release height and air resistance mean the ideal angle is usually lower (e.g., $35^\circ$--$42^\circ$ for shot put and javelin throws).
• Initial Velocity Release Speed:
Initial velocity is the speed at which an object is launched. The kinetic energy transferred to the projectile determines both its vertical height and horizontal distance, making initial velocity the most critical factor for maximizing range in sports.
• Gravity:
Gravity exerts a constant downward acceleration of approximately $g \approx 9.8\text{ m/s}^2$. This force acts exclusively on the vertical component of the trajectory, pulling the projectile back down to Earth and turning what would be a straight line into a parabolic curve.