physics mid-unit exam

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5 Terms

1
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Frictional force formula

Ff = mu(coeff. of friction)*M(mass)*g(acceleration bc gravity)

2
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work-energy principle

work done by Ff = change in KE SO… Work = Ff*D or ½*M*V²

velocity changes = change in KE

3
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kinematic relationships

V² = 2*a*D

4
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dependence on mass and velocity

stopping distance depends on initial (V) but not m, with constant friction

5
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net force → acceleration and velocity changes

F = ma