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Explore the relationship between force, acceleration, and inertia as explained by Newton's laws. Learn how applying different forces to masses impact acceleration. Test your knowledge with practical examples and Newton's Second Law formula.
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Net Force causes acceleration • From now on we will just refer to them as forces.
Apply double the force – cause double the acceleration • Apply 1/3 the force – cause 1/3 the acceleration • What is the relationship between force and acceleration? • i.e. Are they directly proportional or inversely proportional?
Bonus knowledge • What does i.e. stand for? • i.e. means “that is” or “in other words”. • The initials come from the Latin phrase “id est”, which means “that is”.
Inertia resists change. • Mass resists change. • Mass and inertia are the same thing.
Inertia resists change. • Mass resists change. • This is not a surprise since mass and inertia are the same thing.
If we apply a force to a mass, we get acceleration. • If we apply double the force to the same mass, we get double the acceleration. • What is the relationship between force and acceleration? • i.e. Are they directly proportional or inversely proportional?
If we apply a force to a mass, we get acceleration. • If we apply the same force to double the mass, we only get ½ the acceleration. • What is the relationship between mass and acceleration?
Check your understanding • If we apply a force to a mass, we get acceleration. • If we apply 3 times the force to the same mass, we get _____________ the acceleration.
If we apply a force to a mass, we get acceleration. • If we apply 1/2 the force to the same mass, we get _______ the acceleration.
If we apply a force to a mass, we get acceleration. • If we apply ___________ the force to the same mass, we get 5 times the acceleration.
If we apply a force to a mass, we get acceleration. • If we apply the same force to 3 times the mass, we get____________ the acceleration.
If we apply a force to a mass, we get acceleration. • If we apply the same force to 1/5 of the mass, we get____________ the acceleration.
Newton’s 2nd Law The acceleration of an object is directly proportional to force and inversely proportional to mass. • i.e. • a= f/m • More commonly written as • F = ma