# Forces And Terminal Velocity

Mind Map by , created over 5 years ago

## GCSE Physics (Forces And Their Effects) Mind Map on Forces And Terminal Velocity, created by Olivia Brooklyn on 03/22/2014.

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 Created by Olivia Brooklyn over 5 years ago
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Forces And Terminal Velocity
1 Objects falling through a fluid eventually reach terminal velocity, when the resultant force acting on them is zero and they are moving at a steady speed
2 Weight is a force exerted on an object because of a gravitational force
3 Falling objects
3.1 Forces affecting an object falling
3.1.1 The weight of the object. This is a force acting downwards, caused by the object’s mass the Earth's gravitational field
3.1.2 Air resistance. This is a frictional force acting in the opposite direction to the movement of the object
3.2 3 stages of falling
3.2.1 1. At the start, the object accelerates downwards because of its weight. There is no air resistance. There is a resultant force acting downwards
3.2.2 2. As it gains speed, the object's weight stays the same, but the air resistance on it increases. There is a resultant force acting downwards
3.2.3 3. Eventually, the object's weight is balanced by the air resistance. There is no resultant force and the object reaches a steady speed, called the terminal velocity
4 W = m x g
4.1 W = the weight, measured in newtons (N)
4.2 m = the mass, measured in kilograms (kg)
4.3 g = gravitational field strength, measured in newtons per kilograms (N/kg)