MODULE 3: MOMENTUM & ROTATION

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Last updated 1:45 PM on 5/2/26
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8 Terms

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Lineat Momentum (P)

Product of mass and velocity: P=mv. Units: kg⋅m/s.

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Torque (τ)

Rotational force: τ=rFsinϕ. Units: N⋅m.

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Angular Velocity (ω)

Speed of rotation: Δθ/Δt. Units: rad/s.

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Angular Momentum (L)

L=Iω. Units: kg⋅m^2/s

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Rotational Kinetic Energy (K_R​)

K_R​=(1/2)Iω^2

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When: Objects collide (Momentum)

Total initial momentum equals total final: P_i​=P_f​.

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When: Torque is in Equilibrium

Net torque must be zero: τ_net​=0

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When: Using Impulse (J)

When a force is applied over a short time: J=F_avg​Δt=ΔP.