# Biomechanics - PSK 4U Inquiry Assignment #5: Biomechanics...

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PSK 4UInquiry Assignment #5: BiomechanicsA.Newton’s LawsFind (or take) a picture(s) that demonstrate(s) the use of each of the 3 laws ofmotion, and explain how it (they) illustrate(s) the law of motion. For example, youmight select a picture of someone pushing or pulling an object and explain how itdemonstrates the second law of motion.
2.Newton’s Second Law of MotionNewton’s second law states thatthe acceleration of an object is directly related tothe net force and inversely related to its mass. Acceleration of an object dependson two things, force and mass. In this picture there is a man pushing two balls.One ball is heavier than the other. It is obvious that the man uses more force topush the heavier ball because as the mass of the object increases, the force willincrease to remain the same acceleration (F=m*a).3.Newton’s Third Law of Motion
Newton’s third law of motion states that for every action in nature there is anequal and opposite force but the forces are exerted on different objects. Forexample, in this picture, the objects are the air inside the balloon and the balloon.When the balloon is open, the air is able to get out because of the elasticity of theballoon(the elasticity of the balloon pushes the air inside the balloon), whichproduces a force to the air. On the other hand, since the air inside of the ballooncomes out, it also pushes the air around the balloon. Therefore, the air aroundthe balloon pushes the balloon forward. This is the complete process of anexample of Newton's third law of motion.B.TorqueResearch the definition of the biomechanical principle of Torque, and find apicture that represents it. Explain how this picture represents this principle.
The force produces torque in order to change the rotation of the object and its angularmomentum. Torque is produced when the line of action of the force does not passthrough the axis of rotation but creates a torque arm. There are seven biomechanical

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