nevermind, i give up on the up and down, it is only a left and right applet now..

i will be adding capability for aiding this learning process.

Activity: Predict the Motions

Aim: In this activity, students explore the relationships between position and velocity of a moving object with the help of the datalogger. Students will use the distance sensor to track an object’s motion and to correlate the actual motion with its associated position-time, velocity-time and acceleration-time graphs in real time. Students will learn that from the graphical representations, it is possible to determine in what direction an object is moving, how fast it is moving, how far it travelled, and whether it is speeding up or slowing down.

Focussing Question(s):

• How do the position-time, velocity-time and acceleration-time graphs relate to the actual motion of an object?

• What do the gradients of the position-time and velocity-time graphs tell us about the motion?

• What does the area under a velocity-time graph represent?

Initial Activity:

• As a pre-lab activity, students are asked to sketch the position-time and velocity-time graphs of an object for different situations of an object:

o at rest;

o moving in the positive direction with a constant speed v;

o moving in the positive direction with a constant speed 2v;

o moving in the negative direction with a constant speed v (i.e. velocity = -v).