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# Tag Archives: velocity

• ## Fresh Ideas for Your Relative Speed Discussions

Posted on September 1, 2011 by Dr. Joel Bryan

Whether we realize it or not, all velocity/speed measurements are made relative to some other object. When your car's speedometer reads 55 mph, the assumption is that the change in position of the car compared to the stationary ground is 55 miles every hour. However, not all velocity/speed measurements are made relative to a stationary object. The Constant Velocity cars allow students to experimentally investigate relative speeds as the cars with different speeds move in the same and in opposite directions.

This post was posted in CoolStuff Newsletters, Force & Motion, Energy and was tagged with velocity, Relative Speed, cars

• ## Range of a Horizontal Projectile

Posted on January 1, 2011 by Arbor Scientific

Students will use a photogate to measure the launch velocity of a horizontal projectile. That velocity will be used to predict the projectile’s range, or horizontal displacement. The Marble Projectile Ramp is used to launch a marble horizontally from a table or desk. The included screws can be moved to provide up to four different [...]

This post was posted in Labs, Motion and was tagged with velocity, photogate, horizontal projectile, launch, marble

• ## Conservation of Energy: Racing Marbles

Posted on January 1, 2011 by Arbor Scientific

A marble will roll on different paths, starting and ending at the same height. Students will predict and then measure the final velocities of the marble. Ramp A is the nearly horizontal ramp, and Ramp B dips down in the middle. Because the ramps start and end at the same elevation, a marble rolled on Ramp A will end with the same velocity as one rolled on Ramp B, even though they take different times to complete the trip.

This post was posted in Labs, Energy & Work and was tagged with racing marbles, conservation of energy, velocity

• ## Horizontal Projectile

Posted on January 1, 2011 by Buzz Putnam

Students will use a simple method, employing just a meter stick and stopwatch, to determine the initial velocity of a horizontal projectile. They will then predict the range of the projectile, precisely measure the actual range by using carbon paper, and calculate the percent difference.

This post was posted in Labs, Motion and was tagged with velocity, horizontal projectile, steel ball

• ## Racing Marbles: The Race

Posted on January 1, 2011 by Arbor Scientific

Two marbles will roll simultaneously on different paths, starting and ending at the same height. Students will predict and then observe the results of a “race” between the two marbles, and explain the results. Quantitative analysis of the motion will be done with photogates.

This post was posted in Labs, Motion and was tagged with racing marbles, velocity, ramps

• ## Range of an Angled Projectile

Posted on January 1, 2011 by Stephen Rea

The Air-Powered Projectile uses compressed air as fuel to power its launch. One of four thrust washers (sizes Low, Medium, High, and Super) is pressed onto the top of the launcher and the projectile slides down the launching tube. Air is pumped into the launcher with the air pump. When it reaches the pressure needed to launch the projectile, the thrust washer is forced off the launching tube, sending the projectile into the air. Students will launch the projectile vertically and find the launch velocity. They will use that velocity to predict the projectile's range for a given launch angle.

This post was posted in Labs, Motion and was tagged with velocity, angled projectile, air-powered projectile, range, launch

• ## Range of a Horizontal Projectile: Advanced

Posted on January 1, 2011 by Arbor Scientific

Students will use a photogate to measure the launch velocity of a horizontal projectile. That velocity will be used to predict the projectile’s range, or horizontal displacement. Students are guided through the exact steps and equations they will need for the prediction. They will then place a target at the point of their predicted range [...]

This post was posted in Labs, Motion and was tagged with velocity, horizontal projectile

Posted on December 1, 2010 by Buzz Putnam

A truck is traveling 60mph, a baseball shoots out of the back at 60mph. Do you really expect the ball to drop straight down?

This post was posted in CoolStuff Newsletters, Force & Motion and was tagged with velocity, Constant Velocity, Galileo, Vector Addition

• ## Spark Timer Motion

Posted on May 9, 2006 by Arbor Scientific

Students will use a spark timer to record the motion of two toy cars. The spark timer produces a physical record of the motion by making a mark on tape at set intervals. Students measure the distance between the marks and graph the motion.

This post was posted in Labs, Motion and was tagged with acceleration, velocity, spark timer motion, toy cars, graph

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