Motion Flashcards
Define Scalar
Something that has magnitude and no direction
Give an example of a scalar
Speed, distance
Define vector
Something that has magnitude and direction
What is meant by displacement
The distance travelled in a straight line
What is the equation linking speed distance and time
Speed | Time
what are the units for acceleration
m/s^2
what does a sloping line represent on a velocity- time graph
acceleration
what does a horizontal line on a velocity time graph represent
constant speed
how do you calculate the distance travelled on a sloped part of a velocity- time graph
split it into a triangle and work out he area underneath the line
how do you calculate the distance travelled on a horizontal part of a velocity - time graph
split it into a rectangle and work out the area underneath the line
define acceleration
the measure of how fast velocity is changing
what does a horizontal line represent on a distance time graph
the object is stationary
what is stopping distance
the distance where an object has to start braking
how to we work out stopping distance
thinking distance + braking distance
what factors can affect your thinking distance
use of alcohol/ drugs, tiredness, reaction time
