# P2 2.5: Falling objects

All information was taken directly from the AQA revision guide with only the key points from P2 2.5.

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• Created by: JSpencer
• Created on: 27-02-16 16:52
What is the resultant force acting on a free falling object?
Gravity.
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What do we call force of gravity?
Weight.
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What is the acceleration of falling objects called?
The acceleration due to gravity.
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What is the equation of falling objects?
W = m x g
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What does 'W' stand for? Units?
The Weight in Newtons
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What does the 'm' stand for?Units?
Mass in Kilograms
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What does the 'g' stand for? Units?
Acceleration due to gravity in metres per second squared.
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if a object is not falling what is g?
The gravitational feild strength and its units are newtons per kilogram, N/kg.
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What happens when an object falls through a liquid?
The fluid exterts a drag force resisting its motion.
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What happens to the drag force as the object falls faster?
It becomes bigger until they are equal to the weight of the object.
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What happens when the drag force and weight are equal?
The object stops accelerating and moves at a constant speed.
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What is terminal velocity?
The velocity reached by an object when the drag force on it is equal and opposite to the force making it move.
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## Other cards in this set

### Card 2

#### Front

What do we call force of gravity?

Weight.

### Card 3

#### Front

What is the acceleration of falling objects called?

### Card 4

#### Front

What is the equation of falling objects?

### Card 5

#### Front

What does 'W' stand for? Units?