Topics

Kinematics
Speed, velocity and acceleration
Graphical analysis of motion

Description

This simulation has a drop-down menu for exploration of
(i) at rest use of progressive mathematical model is encouraged X = 0 for example
(ii) moving with uniform velocity, use of progressive mathematical model is encouraged for example X = 1*t for a constant velocity motion of v =1 m/s
(iii) moving with non-uniform velocity (eg, constant acceleration) use of progressive mathematical model is encouraged for example X = 0.5*1*t^2 for a constant acceleration motion of a =1 m/s^2
When only the velocity-time graph check-box is selected, it can be explored for the following cases too.
(i) at rest ,
(ii) moving with uniform velocity (eg, no acceleration)
(iii) moving with uniform acceleration (eg, constant acceleration = 9.81 m/s^2)
~~(iv) moving with non-uniform acceleration~~

Calculate the displacement of object (Car) given its velocity and acceleration

change the velocity v and acceleration a to the required value for example v =1 and a = 0.
given that time t = 20 s, find displacement?
use the formula s = ut+ 1/2at^2 = 1*20+ 1/2*0*20^2 = 20 m.
predict the x vs t and v vs and a vs t graph on a piece of paper.
click PLAY to run the scenario selected.
is your answer correct? what did you get wrong? test yourself whether you have enough practice using the kinematics equation s = ut+ 1/2at^2.

Other interesting fun activities

this model can be used to experience negative acceleration and deceleration, a common difficult concept among students.
select negative acceleration from the drop-down menu, record down on a paper the value of a. try other scenario to get negative acceleration. what did you notice about the sign of a when t is called "negative acceleration"?
select deceleration from the drop-down menu, record down the is the magnitude increasing (moving away from 0) or deceasing (moving towards 0 value)
explore your own scenario here to test your initial understanding and fine tune it to be more accurate.
this model also allow figure out velocity and speed , a common difficult concept among students.
select v = 5 m/s, a = -1 m/s^2, select check-box v vs t for the graph to appear with hints for speed |v| and velocity v added what did you notice about the difference between |v| and v when v passes zero m/s?
select a different scenario, record down when does |v| and v differs?
are you able to figure out that |v| is increasing if the velocity moves greater than zero and |v| is decreasing if velocity v moves lesser towards zero value?
leave me a Google+ answer/comment/question/requests etc here http://weelookang.blogspot.sg/2013/12/ejss-kinematics-model.html

Sample Learning Goals

(e) plot and interpret a displacement-time graph and a velocity-time graph
(f) deduce from the shape of a displacement-time graph when a body is:
(i) at rest example of progressive mathematical model is encouraged X = 0
(ii) moving with uniform velocity example of progressive mathematical model is encouraged X = 1*t for a constant velocity motion of v =1 m/s
(iii) moving with non-uniform velocity example of X = 0.5*1*t^2 for a constant acceleration motion of a =1 m/s^2
(g) deduce from the shape of a velocity-time graph when a body is:
(i) at rest
(ii) moving with uniform velocity
(iii) moving with uniform acceleration
(iv) moving with non-uniform acceleration

Version:

http://weelookang.blogspot.sg/2013/12/ejss-kinematics-model.html