# G484 Module 1 - Newton's Laws and Momentum

Mind Map of content checklist of Module 1 for G484 exam. (Content checklist taken from ExamCafe CD)

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• Module 1 - Newton's laws and momentum
• Newtons Laws of Momentum
• Newton's First Law
• A force is necessary to change the state of rest or uniform motion in a straight line of a body.
• Newton's Second Law
• The rate of change of the momentum of an object is directly proportional to the net force acting upon it.
• F=ma is a special case of Newton's Second Law
• Occurs when mass is constant
• Newton's Third Law
• When body A exerts a force on body B, then body B exerts on body A that is equal, opposite in direction and of the same type.
• Linear Momentum
• The product of mass and velocity and is defined as a vector.
• p=mv
• Force is equal to the change in momentum over the change in time.
• F=dp/dt
• F=ma is a special case of Newton's Second Law
• Occurs when mass is constant
• The area under a force/time graph is equal to the impulse.
• The change of momentum in a body.
• I=m(v-u)
• Impulse
• The change of momentum in a body.
• I=m(v-u)
• Collisions
• Perfectly Elastic Collision
• A collision which no momentum or kinetic energy is lost.
• Inelastic Collision
• A collision where momentum is conserved but kinetic energy is not.
• Whilst the momentum of a system is always conserved in the interaction between bodies,some change in kinetic energy usually occurs.