Car Safety Features - the Physics Involved

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Task Details and Answer Sheet Section 1 – Car Safety Features (25 marks) In the space below detail measures taken in modern car designs to reduce possible injuries due to impact. You will need to research as many car safety features as possible and analyse how they reduce injury during impact in the context of physics principles studied in class. Be sure to include the physics concepts inertia, momentum, acceleration, force, impulse and conservation of momentum. Your answer should be hand written and approximately the length of the space provided. *Note: initially written in hand, but would take too long to re-write in hand. Safety features are essential in ensuring that fatalities are reduced or minimised in an occurrence of a collision. Cars should prioritise the overall safety of the occupants and adhere to the 5-star safety ratings system in order to reduce injuries and deaths associated with car crash incidents. There are a variety of new and improved technologically advanced/superior features or assets attributed to a variety of modern manufactured vehicles. Even in cheap, affordable new models, they have the most basic safety features available or necessary incorporated to achieve a decent standard of safety reassurance. Airbags: Airbags are a generalised term, as there are varieties which include: driver/frontal airbags, curtain airbags, rear airbags etc. Moving objects have momentum. (The product of the mass and velocity of the object) Unless and outside force acts on an object, the object will continue to move at its present speed and direction. Cars consist of several objects including passengers. If these objects are not restrained, they will continue moving at whatever speed the car is travelling at even if the car is instantaneously stopped a collision. When a car crashes, the force required to stop an object is very great because the car’s

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