Tuesday, 4 March 2014
My kids got a solid mathematical background in forces during their junior high physical science class. That is to say they know how to calculate forces in newtons and how to find the net force given the acceleration and mass of an object. Like nearly everyone, however, they struggle with “if there’s no net force on an object, the object moves with constant velocity”.
What was the warmup in 4th period?
Almost everyone got the net force for “pull in same direction” and “pull in opposite direction”. Nearly all needed a hint on how “at right angles” looks.