1. VOCABULARY to go with Lab “MOTION IN REVIEW” FORCE INERTIA VELOCITY FRICTION Newton’s first Law of Motion

2. FORCE Definition: A PUSH OR A PULL Example: pulling the garbage can, pushing a bike up a hill.

3. INERTIA Definition: An object’s tendency to either remain at rest or in uniform motion at the same speed in a straight line Example: Your body keeps moving forward even though the bus is stopping.(DISCOVERED BY Galileo Galilei)

4. VELOCITY Definition: Speed in a particular direction. Example: Biking 25 miles (speed) in an hour South(direction)

5. Newton’s First law of Motion Definition: An object can remain at rest or in uniform motion unless acted on by an unbalanced external force Example: A ball stays in the same place until someone kicks it. A ball may keep moving until the grass slows it down.

6. Friction Definition: a force that slows an object from moving. Example: rubber on the bottom of sneakers, brakes on a bike/car Types of friction: fluid(water), air(parachutes/athlete’s uniform), mass(sliding vs. static)

7. Vocabulary for “Gravity and Balance” GRAVITY GRAVITY SUPPORT FORCE NEWTON POUND WEIGHT

8. GRAVITY Definition: A force pulling objects toward the center of the Earth Example: a falling baseball or leaves falling

9. GRAVITY SUPPORT FORCE Definition: An equal force that opposes gravity’s downward pull Example: sitting chair example

10. NEWTON Definition: Unit of force in the metric system(N) Example: One newton(N) =.225LBS or One pound = 4.45 Newton(N)

11. POUND Definition: The United States’s customary unit of force(lb) Example: One newton(N) =.225LBS or One pound = 4.45 Newton(N)

12. WEIGHT DEFINITION: The strength of the force of gravity pulling down toward the earth’s surface Example: the weight of a bowling ball is more forceful than a basketball.

13. MOVING MASSES ACCELERATION MASS NEWTON’S SECOND LAW OF MOTION Air Resistance

14. ACCELERATION Definition: Rate of change in the speed and direction(velocity) of an object. Note: This can mean speeding up, slowing down(deceleration), or changing direction. Example: A car increases speed to pass another car.

15. MASS Definition: Measures the amount of matter in an object Example: Compare a softball to a foam ball, how are they different? A softball has more material compacted in one space than the foam ball. Therefore, it has more mass.

16. NEWTON’S SECOND LAW OF MOTION Definition: A greater unbalanced external force causes greater acceleration of an object; Therefore, a greater unbalanced external force is needed to accelerate(speed up/slow down) an object of greater mass. Force = Mass X Acceleration Example: It takes more power to stop/move a heavier object than a lighter object

17. AIR RESISTANCE Definition: A force exerted by air against an object moving through it and acts in the opposite direction of the object’s motion,”drag” Example: parachute, clothing on an athlete, etc.

18. Vocabulary for Lab “Basketball Arcs” FREE FALL PARABOLA

19. FREE FALL Definition: Floating objects float because of their speed in relation to the Earth- Example: The air craft travels as fast as it is falling downwards, causing the objects/astronauts to float. speed forward(8km/sec) or (5mi/sec): falling speed (5m/sec) or (16ft/sec)

20. PARABOLA Definition: A path that curves or makes an arc caused by gravity’s downward force Example: Connection: As a basketball player shoots from the free throw line, what path does the ball travel to get into the hoop?

21. VOCABULARY for Lab “Rolling On” SPEED Distance Time FRICTION

22. SPEED Definition: Speed- Measures how far an object travels in a period of time Formula: In order to calculate speed, you need distance and divide by time.

23. DISTANCE Speed = Distance divided by Time

24. TIME Definition:Time elapsed from start to stop measured: seconds, minutes,hours time = distance /rate

25. FRICTION(repeat) Definition: Occurs between a moving object and the surface on, or medium through, which it moves -Opposes motion and reduces speed of a moving object Example: 4 types of friction: Fluid (air/water) Static (stationary) Sliding (moving) Rolling (moving with wheels)