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Mr. Scanlan 2Dmotion
| Question | Answer |
|---|---|
| Projectile Motion | Motion of an object with an initial horizontal component, that then experiences free fall. |
| Vector | Physical quantity that has both magnitude and direction |
| Scalar | Physical quantity with only a magnitude |
| Resultant | A vector that represents the sum of two or more vectors |
| All motion is relative because of the observer's | Frame of reference |
| Wind velocity is a (vector or scalar)? | Vector |
| Speed is a (vector or scalar)? | Scalar |
| Free fall velocity is a (vector or scalar)? | Vector |
| A car accelerating is a (vector or scalar)? | Vector |
| Mass of a car is a (vector or scalar)? | Scalar |
| Driving east you throw a ball also east from the car, is its overall velocity faster or slower than the car? | Faster |
| Driving east (10 mph)you throw a ball west from the car (5 mph), is its overall velocity faster or slower than the car? | slower |
| Projectile motion has two vector components, one is vertical and the other is | Horizontal |
| "True" projectile motion follows what path? | Parabolic |
| "True" projectile motion only occurs in the absence of | Air resistance |
| Is a volleyball served over a net a projectile? | Yes |
| Is a ball dropped vertically from a building a projectile? | No |
| Is a homerun in baseball a projectile? | Yes |
| What is the path of a projectile in the absence of air resistance? | A parabola |
| Are there any "true" projectiles in the earth's atmoshphere under normal daily conditions? | No |