Home » Physics » Kinematics

# Kinematics

## Topics

velocity and acceleration

acceleration

CPO Labs Kinematics

Interpreting DT and VT graphs

gravity accelerates downward

dropping & gravity: reaction time lab

penny drop

kinematic equations

Ferris Wheel physics

What is time?

## Ticker-Tape diagrams

### A common way of analyzing the motion of objects in physics labs is to perform a ticker tape analysis. A long tape is attached to a moving object and threaded through a device that places a tick upon the tape at regular intervals of time – say every 0.10 second. As the object moves, it drags the tape through the “ticker”: It leaves a trail of dots. The dots provides a history of the object’s motion, and therefore a representation of the object’s motion.

• “Ticker Tape Diagrams, The Physics Classroom”

## Great! Wait… what the heck is “ticker tape”?!!!

Ticker tape was the earliest digital electronic communications medium, transmitting stock price information over telegraph lines, in use between around 1870 through 1970. It consisted of a paper strip that ran through a machine called a stock ticker, which printed abbreviated company names as alphabetic symbols followed by numeric stock transaction price and volume information. The term “ticker” came from the sound made by the machine as it printed.
Paper ticker tape became obsolete in the 1960s, as television and computers were increasingly used to transmit financial information. The concept of the stock ticker lives on, however, in the scrolling electronic tickers seen on brokerage walls and on financial television networks.
– Wikipedia, Ticker Tape, 91/16

### What is a ticker-tape parade?

A ticker tape parade is a parade event held in a city, with large amounts of shredded paper (originally actual ticker tape, but now mostly confetti) to be thrown from nearby office buildings onto the parade route, creating a celebratory effect by the snowstorm-like flurry.  The term originated in New York City after a spontaneous celebration held on October 28, 1886, during the dedication of the Statue of Liberty and is still most closely associated with New York City.

Enter a caption

United States Library of Congress‘s Prints and Photographs division under the digital ID cph.3g04328. Richard Nixon, 1960

## How fast is the Earth moving around our Sun?

### The Earth, anchored to the Sun by gravity, follows along at the same fantastic speed.

https://astrosociety.org/edu/publications/tnl/71/howfast.html

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# Speed

### There may have been times that you stopped, and others that you went 50 miles per hour. But on average you moved at 25 miles per hour.

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## PowerPoint: Linear Motion, Hewitt Conceptual Physics

• Motion is relative, Speed, Velocity, Acceleration, Free fall

Linear Motion PPT Conceptual Physics

## Kinematics topics

### Reaction time: Catch a falling ruler

Bullet spin kinematics: What goes up must come down

Brachistochrone – curve of quickest descent.

How to solve a problem students usually get wrong: the Half-Atwood machine

## Learning standards

2016 Massachusetts Science and Technology/Engineering Standards
HS-PS2-10(MA). Use free-body force diagrams, algebraic expressions, and Newton’s laws of motion to predict changes to velocity and acceleration for an object moving in one dimension in various situations.

A Framework for K-12 Science Education: Practices, Crosscutting Concepts, and Core Ideas (2012)
PS2.A Forces and motion. How can one predict an object’s continued motion, changes in motion, or stability?

Massachusetts Science and Technology/Engineering Curriculum Framework (2006)
Introductory Physics. Motion and Forces. Central Concept: Newton’s laws of motion and gravitation describe and predict the motion of most objects.

1.1 Compare and contrast vector quantities (e.g., displacement, velocity, acceleration force, linear momentum) and scalar quantities (e.g., distance, speed, energy, mass, work)

1.2 Distinguish between displacement, distance, velocity, speed, and acceleration. Solve problems involving displacement, distance, velocity, speed, and constant acceleration.

1.3 Create and interpret graphs of 1-dimensional motion, such as position vs. time, distance vs. time, speed vs. time, velocity vs. time, and acceleration vs. time where acceleration is constant.

### Learning Standards: Common Core Math

• Common Core Math
• CCSS.MATH.CONTENT.7.EE.B.4  Use variables to represent quantities in a real-world or mathematical problem, and construct simple equations and inequalities to solve problems by reasoning about the quantities.
• CCSS.MATH.CONTENT.8.EE.C.7  Solve linear equations in one variable
• CCSS.MATH.CONTENT.HSA.SSE.B.3  Choose and produce an equivalent form of an expression to reveal and explain properties of the quantity represented by the expression. (including isolating a variable)
• CCSS.MATH.CONTENT.HSA.CED.A.4  Rearrange formulas to highlight a quantity of interest, using the same reasoning as in solving equations. For example, rearrange Ohm’s law V = IR to highlight resistance R.
• http://www.corestandards.org/Math/