Kinematics
A change in velocity over a period of time.
What is acceleration?
mg represents this force that is another word for weight.
What is the force of gravity (Fg)?
The equation for centripetal acceleration.
What is ac= v2/r?
This tells us how “sticky” two objects are to each other.
What is the coefficient of friction (μ)?
This is a property that makes a quantity a vector.
What is direction?
This is the value that can be found from the area under a velocity-time graph.
What is displacement?
2 interacting objects apply forces on one another that are equal and opposite in direction.
What is Newton's 3rd law?
This force becomes zero when a cart loses contact with the track at the top of a roller coaster.
What is normal force?
You need to add cos Θ and sin Θ to this variable when solving projectile motion problems.
What is velocity?
This is how you find displacement (straight line distance between 2 points or the hypotenuse of a triangle).
In free fall, this value is used for acceleration.
What is 9.8 m/s2 (g)?
This is a contact force that is perpendicular to the surface an object is on.
What is normal force (FN)?
This is the time to complete one full cycle.
These two forces are acting on a block connected to a pulley.
What is the force of tension and force of gravity?
Positive centripetal forces point in this direction.
What is towards the center of a circle?
This is the kinematic equation you could use to solve for time when given acceleration, and initial and final velocity.
What is the first kinematic equation?
This equation is set equal to 0 when an object is at rest.
What is the sum of forces (Newton's 2nd law)?
This is the distance between a the center of a satellite and the center of the planet it is orbiting.
What is orbital radius?
This is the circumference of a circle.
What is 2𝜋r?
This is the proper name for g.
What is gravitational acceleration?
This component of velocity is the sin component in projectile motion problems.
What is the y component?
This type of dynamics problem requires us to break forces into x and y components.
What are inclined plane problems?
This is the centripetal force acting on a satellite orbiting a planet.
What is gravitational force?
When acceleration is zero, this is true about the velocity of a moving object.
What is constant velocity?
I’m launching a ball at a 30o angle with an initial velocity of 20 m/s. How long does it fly before it hits the ground?
2 seconds