Definitions
The rate at which velocity is changing. The change may be in magnitude, direction, or both.
What is Acceleration?
This law states that an object will remain at rest, or move in a straight line at constant speed, unless acted upon by an outside force.
What is Newton’s First Law of Motion?
Acceleration due to gravity is ALWAYS this on Earth.
What is 9.8 m/sec2?
What is the speed of an apple thrown straight up into the air when it reaches its highest point?
zero
This is the force that keeps are vehicle in centripetal acceleration around a curve in the road?
What is the force of friction?
This is path an object is moving in during UCM
What is circular?
The rate at which an objects distance changes.
What is speed (or velocity)?
This word describes an object’s resistance to changes in its motion.
What is inertia?
A bullet shot from a gun and an object dropped from the same height will do this (assuming no air resistance)
What is hit the ground at the same time?
In a vacuum a feather and a bowling ball will hit the ground at this time.
What is the same time?
Gravity is constant. This also is constant and unchanging.
What is God's love for his people?
What is inwards, towards the center of the circle?
Motion under the influence of the gravitational force only.
What is Freefall motion?
When you slide a hockey puck on ice, it eventually slows down and stops because of this opposing force.
What is friction?
An object launched straight vertically in the air has this velocity at its maximum height.
What is zero (0 m/sec)?
Since a ball is thrown straight up into the air is slowing down, then it has this
What is negative acceleration due to gravity-9.8m/s2?
Velocity is a vector component. Therefore it has these two quantities.
What is magnitude and direction?
If centripetal force were to suddenly go away on an object undergoing UCM, the object would continue to move this way.
What is in a straight line that is tangential to its circular path?
Velocity is defined as what kind of quantity
What is a vector quantity?
An object will have more or less inertia solely because of this physical characteristic.
What is its mass?
An object that falls to the ground from rest has this initial velocity?
What is zero (0 m/s)?
Since an archer shoots an arrow straight up into the sky with an initial speed of 23m/s, its speed will be this just before it hits the ground?
What is 23 m/s?
Even though velocity can be constant for an object that has centripetal acceleration, this is always changing?
What is its direction?
This is the equation that relates centripetal acceleration.
What is v2/r?
What is the name of the little triangle used in our formulas that denotes change?
What is DELTA?
This scientist wrote The First Law of Motion, along with two more.
Who is Sir Isaac Newton?
This is why, on Earth, a piece of paper and a bowling ball fall to the ground at different accelerations.
What is air resistance?
An objects velocity increases by this much every second when an object is in freefall
What is 9.8m/s?
Centripetal force differs from centripetal acceleration because we must account for this quantity.
What is mass?
This is the equation regarding centripetal force.
What is mv2/r?