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Force = Mass times Acceleration F = M x A. Force of Gravity F = G x M x m / R 2 Every object in the universe exerts a force on every other object. m = Mass 2. M = Mass 1. R = distance between the two objects. Force of the earth on the ball. F = M(ball) x A(ball)
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Force = Mass times Acceleration F = M x A
Force of GravityF = G x M x m / R2Every object in the universe exerts a force on every other object m = Mass 2 M = Mass 1 R = distance between the two objects
Force of the earth on the ball F = M(ball) x A(ball) = G x M(earth) x M(ball) / R2 A(ball) = G x M(earth) / R2 The acceleration of the ball doesn’t depend on the mass of the ball at all!!!
Force of the ball on the earth F = M(earth) x A(earth) = GM(earth) x M(ball) / R2 A(earth) = G x M(ball) / R2 The mass of the ball is tiny compared to mass of the earth so we don’t notice the earth moving.