The higher the hill, the more potential energy there is to change into kinetic energy a and speed. Investigate roller-coaster ... If the cars have bumpers made from an elastic material, the bumper will change shape during the collision. As the bumper ... How much sugar does it take to make a bag of fairy floss? (Ita#39;s about 2anbsp;...
|Title||:||Terrific Topics: Lower primary book 2|
|Publisher||:||Blake Education - 2002|