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This interactive activity demonstrates how vectors are used to represent velocity (speed and direction) and acceleration. In the activity, vectors change in real-time as you drive a car on a flat plain; as you change speed and direction, vectors originating from the car respond to your actions. A graph depicting speed vs.

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Does changing  velocity means changing  speed?

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Does changing  velocity means changing  speed?

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Physics - What is Acceleration | Motion | Velocity | Don't Memorise

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Created with Hot Potatoes by Half-Baked Software, registered to MichaelO'Leary.

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Classkick is a free app that shows teachers in real-time exactly what students are doing and who needs help so they can provide instant feedback.

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Classkick is a free app that shows teachers in real-time exactly what students are doing and who needs help so they can provide instant feedback.

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Created with Hot Potatoes by Half-Baked Software, registered to MichaelO'Leary.

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Classkick is a free app that shows teachers in real-time exactly what students are doing and who needs help so they can provide instant feedback.

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Classkick is a free app that shows teachers in real-time exactly what students are doing and who needs help so they can provide instant feedback.

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Measure your moves with a smartphone ( accelerometer APP)

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Measure your moves with a smartphone ( accelerometer APP)

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2.3 – Position-time graphs for constant acceleration

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Illustration 2.6: Free Fall

Animation 1 | Animation 2 | Animation 3

Please wait for the animation to completely load.

A ball is dropped from rest near the surface of Earth as shown in Animation 1. Its motion is described as free fall (position is given in meters and time is given in seconds). If the +y direction is defined to be upward, then the ball's acceleration is constant and has a value of -9.8 m/s ². If the +y direction is defined to be downward, then the acceleration is +9.8 m/s ². Restart.

Animation 2 shows the ball thrown upward such that it travels upward, reaches some maximum height, and falls back to your hand at the same height at which is was first thrown. Consider the motion of the ball only while it is in the air and not in your hand (If it's in your hand, it's not considered free fall.). The green vector shown is the velocity vector of the ball, v y. When the ball is at its peak, what is v y?

Look at the graphs. At the peak of its motion, the ball goes from upward (a positive velocity) to downward (a negative velocity). It changes velocity smoothly, and the velocity must go through zero at this turnaround point. The acceleration is the change in velocity, which is constant throughout the motion at -9.8 m/s ². You can measure the velocity at two different times by clicking in the v vs. t graph to see that Δv/Δt is constant.

Animation 3 shows the ball thrown downward. Notice that while the ball travels farther (note that it is off screen for most of its motion) and moves much faster than when it is dropped from rest, the slope of the velocity vs. time graph is still -9.8 m/s ² as shown by the acceleration vs. time graph.
When you get a good-looking graph, right-click on it to clone the graph and resize it for a better view.
Illustration authored by Aaron Titus.

Physlets were developed at Davidson College and converted from Java to JavaScript using the SwingJS system developed at St. Olaf College.

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Physlet Physics by Christian and Belloni: Illustration 2.6

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Animation 1 | Animation 2 | Animation 3 Please wait for the animation to completely load. A ball is dropped from rest near the surface of Earth as shown in Animation 1. Its motion is described as free fall (position is given in meters and time is given in seconds).

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High accuracy calculation for life or science.

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Purpose of use

i wanted to know how I the La Palma Volcano was throwing lava bombs into the air so I timed from the highest point reached to when the bomb hit the ground! 397 meters. WOW!

Thank you for your questionnaire.

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Free fall (distance and velocity) Calculator

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Purpose of use i wanted to know how I the La Palma Volcano was throwing lava bombs into the air so I timed from the highest point reached to when the bomb hit the ground! 397 meters. WOW! Thank you for your questionnaire.