UNIT 8

PUSH AND PULL
Push action

Pull action

Changing the shapes of objects


We stretch, squeeze or twist to change the shapes of an object.
Stretching is a pull. 
Squeezing ia a push.
Twisting is a combination of a push and pull.

CHANGING THE SPEED AND DIRECTION OF MOVING OBJECT
  • A moving object moves faster when it is pushed from behind.
  • A moving object slows down when it is pulled from behind.
  • A moving object changes direction when it is pushed or pulled from any of the sides.


PREDICTING AND TESTING
A fair test should be done to get a correct result.
Let's do this!

  1. Put car A, car B and car C at the starting line.
  2. Push the three cars together with a long ruler. This is to ensure that the cars are pushed equally hard.
  3. Record the distances travelled by the cars.

EXERCISES



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