Physical Science Unit 2 Motion Chapter 11

1. Motion – when something changes _________________________

2. Distance – How far an object ____________________

3. _________________________ - the distance an object has been moved from one position to another.

4. Example: one car travels from one town to another that is ______________ to the east.

5. another car travels around a track for __________________ and ends up at the starting point.

6. Both cars traveled a distance of _______________ but the first car’s displacement is _____________ east while the second car’s displacement is ______ because it ended up where it started from.

7. Speed – How much ______________ it takes for

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Any change over time is called a _________________________. Speed is the _________________ of changed in position or the rate of ___________________________.

9. Kinds of Speed - ___________________________speed – the rate of motion at any given instant (speedometer)

10. Constant Speed – a speed that does not __________________ (cruise control)

11. Average Speed – is the total distance traveled by total __________________ of travel (miles per hour)

12. Formula for speed: s = _________

13. Velocity – is both speed and ________________________ . Like speed, velocity may ______________ Unlike speed, the velocity can change while the speed stays _______________________. (because velocity includes both speed and direction, if either value changes, velocity will change)

14. Formula for velocity - v = ___________________

15. Terminal velocity – the highest velocity that will be reached by a _________________________________

16. Momentum – A train is harder to stop than a car going at the same speed…. Why? Train has more ________________ Momentum depends on mass and _________________________

17. Momentum Equation – p=mv Momentum (______) = mass (_____) x velocity (_______). SI unit –