1.
3 Things That Affect Acceleration: speeding up, slowing down, changing direction
2.
3 Types of Friction: Static, Sliding, Rolling
3.
3 Ways to Decrease Friction: Lubrication, Wheels and Rollers, Sanding and Polishing
4.
Acceleration: changing velocity over time
5.
Acceleration Formula: (final velocity-original velocity) divided by time
6.
Balanced Force: equal forces on an object that cancel out; no net force
7.
Displacement: distance between starting and ending point
8.
Distance: how far you go
9.
Force: A push or a pull on objects
10.
Force Unit: Newton
11.
Friction: resistant force caused when two surfaces touch
12.
Inertia: resistance to motion
13.
Momentum: inertia in motion
14.
Momentum Formula: mass times velocity
15.
Motion: a change in position
16.
Rolling Friction: least kind of friction; occurs with wheels and rollers
17.
Second Law of Motion formula: mass times acceleration
18.
Sliding Friction: less than static; when objects start to move
19.
Speed: how fast you go
20.
Speed Formula: distance divided by time
21.
Static Friction: the greatest kind of friction; keeps the objects at rest
22.
Unbalanced Force: unequal forces on an object; you get a net force; causes the object to accelerate
23.
Velocity: speed with a direction
24.
What affects friction?: type of surface and mass of an object; NOT the amount of surface touching
25.
What affects Inertia?: mass of an object; the larger the mass the greater the inertia
26.
What changes velocity?: speed or direction
27.
What do you need to see motion?: a reference point
28.
What does the First Law of Motion say?: An object at rest or motion will stay that way unless an outside force (net force)
29.
What does the Second Law of Motion say?: a net force on an object causes it to accelerate in the direction of the force
30.
What does the Second Law of Motion show?: it shows how force, mass and acceleration are related
31.
What does the Third Law of Motion say?: for every action force there is an equal and opposite reaction force
32.
What is momentum affected by?: mass and velocity
33.
What's another name for the First Law of Motion?: Law of Inertia
34.
What's another name for the Third Law of Motion?: Reaction Law