Terminal velocity

• The weight of an object, represented by a downward-pointing arrow, is a force that pulls it downwards towards the earth.
• The magnitude of an object's weight remains the same as the object's mass doesn't change.
• The resultant force, which is the combination of all the forces acting on an object, is the same size and direction as the weight because there aren't any other forces.
• The resultant force causes an object to accelerate downwards as soon as it starts falling.
• The lower the air resistance, the smaller the resultant force upwards, and the slower the object will fall.
• When the air resistance equals the weight, the resultant force becomes zero, and the object reaches a new terminal velocity.
• As the person falls and bangs into all these tiny air particles, they act to slow the person down.
• The size of the air resistance will depend on two main things: the surface area of the person and the velocity with which the person's moving.
• The surface area of an object, represented by a square, is a factor in how many collisions can take place.
• The velocity of an object, represented by a circle, is a factor in how many particles it will collide with.
• The resultant force acting on the person is just the sum of the weight and the air resistance.
• The air resistance effectively cancels out some of that weight, making the resultant force smaller.
• The resultant force is still acting in the downwards direction, indicating the person will continue to accelerate downwards as their velocity increases.