P9 Flashcards
On a distance time graph, what does a horizontal line show?
An object is stationary
on a distance time graph what does a strait line that slopes upwards show?
Moving at a constant speed
What does the gradient of a distance time graph show?
The speed
What is velocity?
Speed in a given direction
What is a vector?
A physical quantity that has direction and magnitude
What is a scalar?
a physical quantity that only has magnitude
What is the acceleration of an object equation?
change in velocity(triangle v) divided by time(t)
What is deceleration?
change of velocity per second when an object slows down
What can a motion sensor linked to a computer be used for?
Velocity changes
What does the gradient of a line in a velocity time graph represent?
Acceleration
It a velocity time graph has a horizontal line, what is the acceleration?
0
What does a positive gradient on a velocity time graph represent?
Acceleration
What does a negative gradient on a velocity time graph show?
Deceleration
What does the area under the line on a velocity time graph show?
Distance travelled
On a distance time graph, what does the gradient of a like show?
The speed of an object moving at constant speed