Video and lesson investigations on the topic of opposing forces. Key concepts include:
- It may be hard to stop something moving.
- Car drivers or passengers may keep on moving when the vehicle stops. Seat-belts stop them from carrying on moving when the car stops suddenly. Objects keep moving unless there is an opposing force to stop them.
- The pulling force from a seat-belt stops a body from moving when the car stops suddenly.
- The purpose of the seat belts is to ‘fasten’ the passenger to the car so that if the car stops suddenly, the passenger will behave as though he or she is part of the car, and will not continue moving forward.