distance, displacement, and velocity
What is displacement?
the difference between the initial position and the final position of an object.
What is speed at a specific instant?
Instantantaneous speed
What is acceleration if a bus is traveling at 35m/sec then stops in 7 seconds?
5.83m/sec2
The description of an object's position depends on...
The reference point
what is the formula for velocity?
v= d/t
Two measurementss frequently compared to each other are...
Distance and time
If the velocity changes then its acceleration is changed by what 3 things?
1. Increasing speed
2. Decreasing speed
3. Changing direction
On a speed vs. time graph when is the slope negative?
When the speed is slowing down.
What is velocity?
the speed and direction of an object.
On a distance-time graph greater speed equals what?
longer arrow
On a distance/time graph, what does the line look like if it is going at a fast steady speed?
At an angle going straight.
What is the formula of acceleration?
Velocity Final - Velocity Initial / Time
When are distance and displacement equal?
When they are both in the same direction or are both 0.
Speed time graphs show only what ?
the relationship between speed and time
What is position?
An objects distance and direction from a reference point.
What is the speed of a rocket that travels 7200 meters in 10.5 seconds
685.7143m/s
What does a distance-time graph show?
It shows how one measurement compares to another.
when you describe a postion using two directions you are using..
two dimensions
What is a reference point?
A starting point you choose to describe the location or position.
What are the two exact definitions of slope?
1. The measure of steepness on the graph
2. The change over time