30 July, 2013

Grade 4 Design and Technology Pull back car

Students of Grade 4 made a Pull Back car.  This car is based on the principle of conversion of energy. 

Potential energy gets converted to kinetic energy. A rubber band is used in the construction. At rest the rubber band has potential energy.  When stretched and released this energy is converted to kinetic energy. This is how the car is propelled.

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