Describing Motion
This occurs when an object changes position relative to a specific reference point.
Motion
Velocity is different from speed because it also considers ____________.
Direction.
A push or pull applied to an object
Force
This law is also known as the law of intertia.
Newton's First Law
Gravity depends on what two measures?
Mass and distance between objects.
This is the defining characteristic which separates distance from displacement (must say which is which to get points).
Direction, Displacement includes direction.
A bike slowing down is an example of ____________ acceleration.
Negative
When two forces acting on an object are balance, the net force exerted on that object is ________.
0/zero
This law specifies the direction of an object's acceleration.
Newton's Second Law
Anything that is thrown or shot through the air can be considered a ___________.
Projectile.
Speed which does not vary is called ______________ speed.
Constant
This is the rate of change in velocity, which occurs when an object changes speed, direction, or both.
Acceleration
Friction is caused by microscopic bumps called ____________
Microwelds
Which of Newton's Laws specifies the reactions of actions or forces.
Newton's Third Law
An object with a lesser mass will have a _____________ gravitational force on it.
lower, weaker, lesser
On a distance-time graph, __________ goes on the X-axis and __________ goes on the Y-axis
Time, Distance
To calculate acceleration, you divide _______________ by time.
Change in velocity or final velocity - initial velocity
A car driving on a road with it's wheels on the ground is an example of what sort of friction?
Rolling
Momentum is dependent on which two measures?
Mass and velocity
Momentum = mass x velocity
Horizontal and Vertical
If the average speed (v) of a boy on a bike is 10 mph, how long will he need to ride to make it to the mall 6 miles away (d).
0.6 hours or 36 minutes
A train slows from 30 m/s to 0 m/s over 5 minutes as it nears the station. What is the acceleration of the train and is it negative or positive.
Keep in mind, it's measured in m/s.
Negative, -0.1 m/s
Skydiving is an example of which type of friction?
Fluid
An object with a mass of 4 kg moving with an acceleration of -3 m/s has been acted on with how much force?
12
Centripetal means what?
Toward the Center.