Mechanics 1.1 Flashcards
1
Q
Define ‘speed’
A
A measure of how far an object can travel in a certain amount of time. Measured by a change in distance divided by a change in time.
2
Q
What is the SI unit for speed?
A
ms-1
3
Q
What does a straight line on a distance-time graph mean?
A
Stationary
4
Q
Difference between velocity and speed
A
Velocity is speed with a direction, while speed does not have a direction.
5
Q
What does an increasing line to the right on a distance-time graph mean?
A
Constant speed
6
Q
What does a steep increasing line to the right on a distance-time graph mean?
A
Higher constant speed
7
Q
How do you calculate speed using a distance-time graph?
A
Change in distance/change in time
