| Question |
Answer |
| How can you tell teh acceleration of a car on a speed time graph? |
The slope of the line indicates the acceleration |
| What is high positive value? |
Rapidly increasing speed ( a line with a steep slope) |
| What is low positive value? |
Slowly increasing speed ( a line with hardly any slope) |
| What is Zero value? |
There is no acceleration ( there is a horizontal line across the graph) |
| What is negative value? |
The speed is decreasing ( the slope is negative) |
| What does the area under the speed time graph indicate? |
The area under the line ona speed time graph is the total distance traveled. |
| How can you tell that an object is accelerating? |
As long as there is a slope to the lone the object is accelerating |
| What is Instantaniouse speed? |
Is the sped at the particular moment in time, for any object moving a constant speed the instantaniouse speed is the same |
| How do you find intantaniouse speed on a distance time graph? |
A target is a straight line that just touches the slope of time on that line, the slope of this line is the instantaniouse speed |
| How do you find the instantaniouse speed on a speed time graph? |
For the speed time graph you just go straight down from the moment in which you want to find the speed for. |
| How do you find the instantaniouse speed on a distance time graph if the speed is changing? |
|
| General formula for average speed |
Vav = delta d/ delta t |
| General formula for average acceleration |
Aav = delta v/ delta t |
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