The follwing applet is Quiz: Do you know when two particles have the same horizontal speed?
Created by prof Hwang modified by Ahmed
Original project Quiz: Do you know when two particles have the same horizontal speed?

Click Play to start the simulation. Enter the time when you think those two particle have the same HORIZONTAL speed. (Enter into the text field and the answer will be shown).
You can change the initial velocity for both particle with your mouse (drag the RED arrow).
The horizontal velocity for the top one should be larger than the lower one.
The top one will move with constant velocity, while the second will need to move up the hill (with constant deceleration a=-g*sinθ)
You can also drag the yellow box to change the height of the slope.
Two traces shows X(t) for both particles. Try to find out the answer from those two curves.

Full screen applet or Problem viewing java?Add http://www.phy.ntnu.edu.tw/ to exception site list
Press the Alt key and the left mouse button to drag the applet off the browser and onto the desktop. This work is licensed under a Creative Commons Attribution 2.5 Taiwan License

• Please feel free to post your ideas about how to use the simulation for better teaching and learning.
• Post questions to be asked to help students to think, to explore.
• Upload worksheets as attached files to share with more users.

Let's work together. We can help more users understand physics conceptually and enjoy the fun of learning physics!

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Hi Tara,

Actually not video is an EJS java simulation. are you sure that Java already installed in your system, check it and try again.

Good luck!