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PS Final : Physics
Physical Science Final Exam Review for Physics Part
| Question | Answer |
|---|---|
| guidelines for describing object's specific location in space and time | frame of reference |
| Force that always opposes motion | friction |
| Law of Motion: F = ma | 2nd |
| Anything that can cause an object to change its motion | force |
| Law of Motion: "For every force, there is an equal and opposite force" | 3rd |
| Displacement divided by time | velocity |
| Quantity that has magnitude only | scalar |
| Distance divided by time | speed |
| Law of Motion: "An object in motion, will stay in motion until acted on by a net force" | 1st |
| Quantity that has magnitude and direction | vector |
| Shortest distance between 2 points | displacement |
| Force that causes downward acceleration | gravity |
| Force times distance | work |
| Path of motion for all projectiles | curved |
| Upward force opposing gravity | air resistance |
| mass X gravity X height (object not moving) | PE (potential energy) |
| half the mass X velocity squared (moving object) | KE (kinetic energy) |
| sum of PE + KE | ME (mechanical energy) |
| SI unit for work and energy | J (Joules) |
| SI unit for force and weight | N (Newtons) |
| SI unit for mass | kg (kilograms) |
| Value for gravity on Earth | 10 m/s/s |
| Amount of work done if object does NOT move | Zero |