P3 - Speed Flashcards
1
Q
What is speed?
A
Speed is a measure of how fast an object is going.
2
Q
What is the formula for average speed?
A
Average speed = distance/time
3
Q
How does a speed camera work?
A
1) as a speeding car passes a camera a photograph is taken
2) a second photograph is taken 0.5 seconds later
3) white lines on the ground shows how far the car travels in 0.5 seconds
4
Q
What is instantaneous speed?
A
The speed of a moving object at a particular moment.
5
Q
What does U stand for?
A
U stands for starting speed.
6
Q
What does V stand for?
A
V stands for the ending speed.
7
Q
How do you change from km/h to m/s?
A
Times by 1000 and then divide by 3600.
