Studied by 1 person
How do you find the average speed travelled by an object?
Total distance travelled / total time taken
What is the unit for acceleration?
M/s squared
What is the unit for speed
M/s
On a distance time graph what does the gradient represent?
Speed
On a speed time graph what does the gradient represent?
Acceleration
on a speed distance graph how do you find the distance travelled?
Area under the graph
What is the difference between a scaler quantity and the vector quantity
scaler- has size only
vector- has size and direction
What does a horizontal line represent on a distance time graph
Stationary
What does a straight diagonal line represent on a distance time graph
Constant speed
What is the stopping distance of a vehicle?
Thinking distance + braking distance
What is the definition of a thinking distance
The distance travelled in a vehicle while you are reacting to a hazard
What is the definition of a braking distance?
The distance travelled in a vehicle while you are pushing the brakes
State 3 factors that affect your thinking distance?
Speed, distractions, alcohol
3 ways to reduce your braking distance
New brakes, lower speed, lower mass
What is the relationship between speed and thinking distance?
The thinking distance is proportional to the speed
what does a graph of braking distance against speed look like?
A curve with an increasing gradient
Note
Flashcard