Tutorial
GCSE Maths: Rates of Change
Learn to use and rearrange the formulae for speed, density, and pressure to solve problems.
Tutorial
GCSE Maths: Rates of Change
Learn to use and rearrange the formulae for speed, density, and pressure to solve problems.
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Deck Contents
26 CardsLesson#1
In this deck, we'll explore three important rates of change: speed, density, and pressure. You'll learn the formulae that connect them to other quantities, and how to rearrange these formulae to solve different types of problems.
Lesson#2
Let's start with speed. Speed measures how quickly an object covers a certain distance. It's a rate of change because it tells you the distance travelled for every unit of time, for example, miles per hour or metres per second.
Quiz#3
What three quantities are related by the formula for speed?
speed, distance, time
Quiz#4
How do you calculate speed if you know the distance travelled and the time taken?
distance divided by time
Lesson#5
A helpful way to remember the formula and its rearrangements is the formula triangle. Imagine a triangle split into three sections. Distance is in the top section. Speed and Time are in the two bottom sections. To find a quantity, you cover it with your finger and see the calculation that's left.
Quiz#6
Using the formula triangle for speed, how do you calculate distance?
speed multiplied by time
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