2. Describing motion Flashcards
Describing motion
1
Q
Define speed:
A
The distance traveled per unit of time
2
Q
Define acceleration:
A
If the speed of something is changing it is accelerating
3
Q
What is the formula for calculating average speed?
A
Average speed= total distance/total time v = d/t
4
Q
What is distance measure in?
A
mm, cm, m or km
5
Q
What is time measured in?
A
ms, s, minutes or hours
6
Q
What is the difference between speed and velocity?
A
Speed is a scalar quantity and velocity is speed in a given direction
7
Q
What is the formula for acceleration?
A
acceleration= change in velocity/time a = v-u/t
8
Q
In a distance time graph what is the gradient?
A
The gradient is velocity.
9
Q
In a speed time graph what is the gradient?
A
The gradient is acceleration.
10
Q
What is the area under a speed time graph equal to?
A
It is equal to the distance
