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Ch 3
| Question | Answer |
|---|---|
| What is a scalar? | a quantity completely specified by only a number with appropriate units; has magnitude, but no direction |
| What is a vector? | a quantity that has magnitude and direction. |
| What are examples of scalars? | speed, volume, and the number of pages |
| What are examples of vectors? | displacement, velocity, acceleration, |
| (Vector)X(Scalar)= | Vector |
| V = | Velocity |
| 2V = | Double velocity |
| -2V= | Double velocity & go 180 degrees |
| What is projectile motion? | Motion of an object in 2 dimensions that is under the influence of gravity and no other influence |
| What kind of path does projectile motion follow? | Parabola |
| What is a frame of reference? | Coordinate system for describing precise locations of objects from space |