| Question |
Answer |
| The state in which one object’s distance from another object is moving |
Motion |
| A place or point used for comparison to determine if an object is in motion |
Reference Point |
| A version of the metric system used by scientists all over the world |
Internation System of Units (SI) |
| The SI unit for length |
Meter |
| The distance that an object travels per unit of time |
Speed |
| What is the formula (equation) used to find speed |
S = D/T; Speed = Distance/Time |
| Tell a metric unit for speed |
Km/hr, m/s |
| The overall rate of speed that an object moves, comparing the total distance traveled and the total time |
Average Speed |
| The rate of speed that an object is moving at a particular instant or time |
Instantaneous Speed |
| Speed in a given direction |
Velocity |
| The steepness of a line on a line graph |
Slope |
| How do you calculate the slope of a line? |
Slope = Rise/Run |
| On a graph that shows Distance V/S Time, what does the slope of the line represent? |
The Speed |
| On a graph that shows Distance V/S Time, what does a steep slope mean? |
The speed is fast |
| On a graph that shows Distance V/S Time, what does a gradual slope mean? |
The speed is slow |
| On a graph that shows Distance V/S Time, what does a horizontal line mean? |
Slope = 0, so the object is not moving. |
| The rate at which the velocity of an object changes |
Acceleration |
| What are the three things that can cause acceleration? |
Increase in speed, Decrease in speed, or Change in direction |
| What is the formula (equation) used to find acceleration? |
A = (Final Speed - Initial Speed)/Time |
| What is the metric unit for acceleration? |
(m/s)/s or m/s2 |
| What does it mean if an object has a positive acceleration? |
It is speeding up |
| What does it mean if an object has a negative acceleration? |
It is slowing down |
| What does it mean if an object has no acceleration (A = 0)? |
It is moving at a constant speed |
Ch.18 LTI-MA 509
