What is free fall?

Free fall refers to the motion of an object that is falling solely under the influence of gravity, without any resistance from air or other forces. This means that the only force acting on the object is gravity, causing it to accelerate downward at a constant rate.

Key Characteristics of Free Fall

• Acceleration: In free fall, objects accelerate at approximately 9.81 meters per second squared (m/s²) near the Earth's surface.
• Independence from Mass: All objects, regardless of their mass, fall at the same rate in a vacuum.
• Initial Velocity: If an object is dropped from rest, it starts with an initial velocity of zero.

Real-World Examples

Common examples of free fall include:

• A skydiver in free fall before opening their parachute.
• A dropped ball falling to the ground.

Importance in Physics

Understanding free fall is crucial in physics as it helps explain concepts like gravitational force and motion. It also lays the groundwork for studying more complex topics such as projectile motion and orbital mechanics.