2.1 Flashcards
What is speed?
A measure of how fast or slow an object is morning
How do you measure speed?
Speed= distance/time
What quantity is speed?
Vector Quantity
What is a vector quantity?
It has a magnitude (size) and direction
What quantity is acceleration
Vector Quantity
How do you work out acceleration?
change in velocity/time
What does a steep line on a distance speed time graph mean?
Moving at a high speed
What does a less steep line on a speed distance time graph mean?
A lower speed
What does a flat/horizontal line on a speed distance time graph mean?
Not moving
How do you calculate the mean velocity on a distance time graph?
Total distance travelled/ total time taken
What is the first rule of a distance speed time graph?
The slope/ gradient is equal to the acceleration
What is the second rule of a distance speed time graph?
The area under the graph is equal to the distance travelled
What is the total stopping difference?
Thinking distance and the braking distance
