____ is the product of mass and ____. It describes how difficult it is to stop a moving object and is a ____ quantity. The Principle of ____ of Momentum states that the total momentum ____ a collision is equal to the ____ after a collision in the ____ of external ____ An ____ collision is a collision in which momentum is conserved but ____ is not. Some of the kinetic energy is converted to ____ and ____ upon impact An ____ collision is a collision in which ____ ____ and kinetic energy are conserved. An explosion is when an object ____ into two parts which then move off in opposite directions. Total momentum is ____ and will be zero after the explosion. Impulse is the product of ____ and ____. It is a ____ quantity. It is also equal to the change in ____ of an object and is given by the ____ a force time graph. Airbags are found in vehicles as a ____ feature. The ____ in time taken for a person's head to ____ to ____ on impact with the steering wheel, thereby reducing the average ____ exerted on the person's head. ____ are found at the front and rear of vehicles as a safety feature. They increase the time taken for the vehicle to decelerate to rest on ____, thereby ____ the average ____ exerted on the passengers.

Collisions, Explosions and Impulse

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