Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
12 Cards in this Set
- Front
- Back
- 3rd side (hint)
|
What is the equation for speed
|
S = d ÷ t
|
|
|
|
What is the equation for average speed
|
average speed = total distance ÷ total time
|
|
|
|
How to speed camera find the speed of a vehicle
|
2 photographs are taken, these can be:
A certain time apart, so the distance traveled in that time can be calculated A certain distance apart, so that the time taken front the first place to the second can be calculated |
|
|
|
What is instantaneous speed
|
Not the same as average speed
To find it out, calculate the average speed over a shorter period of time |
|
|
|
How do you calculate distance
|
D = average speed × time
|
|
|
|
How do calculate the distance when the speed changes
|
D = (u+v ÷ 2) × t
|
D = distance
u = starting speed v = finishing speed T = time taken |
|
|
How do you calculate the speed on a distance-time graph
|
S= y ÷ x
|
|
|
|
On a distance-time graph what does a straight line mean
|
The object has stopped
|
|
|
|
On a distance-time graph what does a straight line sloping upwards mean
|
The object is traveling at a constant/steady speed
|
|
|
|
On a distance-time graph what does the gradient show
|
Speed
|
|
|
|
On a distance-time graph what does a steep gradient mean
|
higher speed
|
|
|
|
On a distance-time graph what does a curved line mean
|
the speed is changing
|
|
