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Parachute Investigation Aim The aim of the experiment is to investigate how each of several different weights of varying mass attached to a parachute in turn can influence the gravitational pull and air resistance forces acting on it, consequently affecting the time it takes to reach the ground when dropped from a specific height. Preliminary Work Forces are measured in Newtons (N), named after Isaac Newton who invented this unit. We cannot see them but instead we can see their effects on objects, so forces are described in terms of what they do. They can cause objects to turn, change speed, direction or shape. The forces acting on a falling parachute are gravity and air resistance and these are the two forces which affect the speed at which the parachute falls. Air resistance (also called drag) is when air molecules collide with an object's leading surface. This is the opposite force to gravity, and...

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