Friction
T/F: Is static friction when force is applied and nothing happens?
True
Does speed have a direction label?
No
What is Newton's second law?
Law of Force and Acceleration
Define momentum
Which has a direction, speed or velocity?
Velocity
T/F: Friction does not produce heat.
False
What two things are multiplied together to get distance?
Velocity and Time
An object at rest remains at rest until acted on by another force. Which law does this represent?
This represents Newton's first law of motion
Define inertia
The tendency in objects to resist any change in motion.
What is measured in Newtons?
Force
Do wheels cause sliding friction?
No
What is the equation for acceleration?
Acceleration = VF-VI/Time
A golf club hits a golf ball and the golf ball travels forward. What law does this represent?
This represents Newton's third law
The sum of forces acting on an object(s) is the definition for what?
Net Force
A speed over a certain time period is what
average speed
Define fluid friction
Friction that acts on objects that are moving through a liquid
How would a graph show the progression of a moving car that is at a constant speed?
the line would be straight across at the same number
What in class activity represented Newton's Third Law?
The Balloon car activity, and the Newton's Law stations.
The speed of a moment at a particular time is the definition of what?
Instantaneous speed
What would happen to your weight if gravity doubled?
Your weight would stay the same
T/F: Rolling friction is when a wheel, ball, or cylinder rolls freely over a surface
True
If a hose is running for 5000 meters and the horse finishes in 200 seconds, what is the horse's speed?
25 M/S
When pushing a shopping cart empty, the amount of force exerted does not push a full shopping cart as far. Which law does this represent?
This represents Newton's Second law
with a collision between two bodies, the total momentum before the collision equals the total momentum after the collision. What does this define?
The law of conservation of momentum
What activity that was done in class showed balanced forces?
The house of cards activity.