1. Motion

2. Motion Vocabulary motion momentum speed work velocity joule
acceleration
power
force
watt
newton
work input
net force
work output
friction
wave
gravity
transverse wave
weight
longitudinal wave
mass
amplitude
terminal velocity
wavelength
free fall
reflection
projectile motion
refraction
inertia

3. Speed vs. Velocity Velocity – SI unit m/s plus direction
Speed - SI unit m/s
Velocity – SI unit m/s plus direction
distance traveled divided by the time interval during which the motion occurred
speed of an object in a particular direction

4. Acceleration – pg. 514
rate at which velocity changes over time; an object accelerates if its speed, direction, or both change.
a = v2 – v1/ t

5. Force – SI unit N – pg. 517
a push or a pull exerted on an object in order to change the motion of the object; force has size and direction
net force – combination of all the forces acting on an object
balanced force – when the forces on an object produce a net force of 0 N

6. copy question & answer in notebook
How is velocity different from speed?
How does the direction of the net force on a object compare to the direction of its motion?
How does a net force of 0 N impact an object’s motion?

7. Friction – pg. 521
a force that opposes motion between two surfaces that are in contact

8. kinetic friction – pg. 522
static friction – pg. 523

9. Gravity – pg. 527
a force of attraction between objects that is due to their masses

10. mass affects gravitational force – pg. 528
distance affects gravitational force – pg. 529

11. weight vs. mass weight mass
measure of the gravitational force exerted on an object
a measure of the amount of matter in an object

12. Newton’s 1st law of motion
An object at rest remains at rest, and an object in motion remains in motion at a constant speed and in a straight line unless acted on by an unbalanced force.

13. Newton’s 2nd law
The acceleration of an object depends on the mass of the object and the amount of force applied.
F = m x a
a = F/m

14. Newton’s 3rd law
When one object exerts a force on a second object, the second object exerts an equal and opposite force on the first.

15. Momentum
a quantity defined as the product of the mass and velocity of an object
p = m x v

16. Science math equations to know
speed
average speed = total distance / total time
s = d / t
Newton’s 2nd law
Force = mass x acceleration
F = m x a
acceleration
average acceleration = final velocity – initial velocity / time
a = v2 – v1 / t
momentum
momentum = mass x velocity
p = m x v