Chapter 2

IWP Applets for Chapter 2

ID/Type	Web Link or WA Question Code	Local download	Launch from browser	Description
L03PLv2	APB-L03PL-04	velocity05b.iwp	velocity05b.iwp	A position vs. time graph of a uniformly-accelerating object is shown. Collect data on position vs. time and use the finite-difference method to determine the acceleration of the object.
M01	APB-M01-01mc	velocity01b.iwp	velocity01b.iwp	Play the animation to show a position vs. time graph of a uniformly-accelerating object. The blue line remains tangent to the path of the object. Therefore, the slope of the blue line is the instantaneous velocity of the object. Its value is given above the play buttons. Predict how a graph of velocity vs. time will appear. Then click on Show Graph to display a velocity vs. time graph of the motion.
M01	APB-M01-02mc	velocity06.iwp	velocity06.iwp	Play the animation to show a position vs. time graph of a uniformly-accelerating object. Determine the acceleration of the object.
M01	APB-M01-03	velocity02b.iwp	velocity02b.iwp	The situation is similar to the last problem but with different initial values. Change the inputs in order to model the motion of an object thrown vertically from the ground (initial position of 0 m) at 25 m/s. (What should you input for the acceleration?). Type in values of initial position, initial velocity, and acceleration and run the animation. Remember to click Reset whenever you change an input. Click Show graph to show velocity vs. time and acceleration vs. time graphs.
M01	APB-M01-07	velocity04.iwp	velocity04.iwp	A position vs. time graph of a uniformly-accelerating object is shown. The blue line is always tangent to the path of the object. Determine the acceleration of the object by first finding the velocities at two instants of time. (Note that for this problem the graph display has been disabled.)
M02	Representing Motion in Graphs, Part 2	kingraph1.iwp	kingraph1.iwp	Play the applet to show a position vs. time graph of the blue dot. In your notes, sketch your predictions for the shapes of the corresponding velocity vs. time and acceleration vs. time graphs. Then click on Show graph to check your predictions.
M02	Representing Motion in Graphs, Part 2	kingraph2.iwp	kingraph2.iwp	Play the animation to display a position vs. time graph of the red dot. The values of position and velocity are given as outputs. What are the corresponding graphs of velocity vs. time and acceleration vs. time?
M03	Pursuit Problems	haretortoise.iwp	haretortoise.iwp	The graph shows position vs. time of two objects which we will call a hare (red) and a tortoise (blue). The animals are in a race. The tortoise gets the advantage of a head start 100 m ahead of the hare. The hare runs ten times as fast as the tortoise does. Where and when does the hare catch up to the tortoise? The initial positions and velocities of the animals are given. These can be changed to produce different results. After changing any input, click Reset. Time, position, and separation of the animals are given above the play buttons.
M03	Pursuit Problems	haretortoise2.iwp	haretortoise2.iwp	Now the tortoise has an acceleration to try to outrun the rabbit. (Note that the axis scales have been changed.) Play the animation to see how the hare won't be able to catch the tortoise. Change the acceleration to 0.5 m/s^2, reset, and run again. Click Show graph. The black line shows the distance between the hare and tortoise as a function of time. Note how it dips to a minimum and then rises without ever reaching zero. What is the greatest acceleration that the tortoise can have and still be caught by the hare? Where and when do their paths intersect?
Old versions
M01a	APB-M01-01	velocity01.iwp	velocity01.iwp	Play the animation to show a position vs. time graph of a uniformly-accelerating object. The blue line remains tangent to the path of the object. Therefore, the slope of the blue line is the instantaneous velocity of the object. Its value is given above the play buttons. Predict how the graph of velocity vs. time will appear. Then click on Show Graph to display a velocity vs. time graph of the motion.
M01a	APB-M01-03	velocity02b.iwp	velocity02b.iwp	The situation is similar to the last problem but with different initial values. Change the inputs in order to model the motion of an object thrown vertically from the ground (initial position of 0 m) at 25 m/s. (What should you input for the acceleration?). Type in values of initial position, initial velocity, and acceleration and run the animation. Remember to click Reset whenever you change an input. Click Show graph to show velocity vs. time and acceleration vs. time graphs.
M01a	APB-M01-07	velocity04.iwp	velocity04.iwp	A position vs. time graph of a uniformly-accelerating object is shown. The blue line is always tangent to the path of the object. Determine the acceleration of the object by first finding the velocities at two instants of time. (Note that for this problem the graph display has been disabled.)