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Grades 5-8 Performance Task
Contributed by: Council Chief State School Officers
(CCSSO)
Students investigate the common observation
that your body gets pushed against the side of
a car when the vehicle makes turns. The students
look at objects that move in circles to see what
keeps them moving in a circle. This exercise demonstrates
three ideas about circular motion. 1) Forces are
needed to cause circular motion; 2) When a force
causing an object to move with circular motion
stops, the object will move with straight line
motion tangent to the circle; 3) Objects moving
straight will continue to move straight until
an outside force causes them to turn.
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