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9 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Rotational motion
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describe the motion in which an object spins.
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Ferris Wheel
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Radians
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a unit to express angles in science
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3π/4
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Angular Displacement
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arc length to radius
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is the change in arc length divided by the radius.
Δθ = Δs/r |
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conversion
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feta(rad)= pi/180 feta (deg)
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Angular Speed
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describes the distance traveled in a specific interval of time.
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Wavg = Δθ/Δt
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Angular Acceleration
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the time rate of change of angular speed, expressed in radians per second, per second.
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Aavg=(W2-W1)/(t2-t1)=(ΔW/Δt)
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x
v a |
θ
W a |
angular displacement
angular displacement angular acceleration |
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Rotational and Linear equations
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Wf = Wi + aΔt
Δθ = WiΔt + (1/2)a(Δt)^2 Wf^2 = Wi2 + 2a(Δθ) Δθ= (1/2)(Wi+Wf)Δt |
Vf= Vi + aΔt
Δx=ViΔt+1/2a(Δt)^2 Vf^2= vi^2 + 2a(Δx) Δx=1/2(Vi+Vf)Δt |
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Tangential speed
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the instantaneous linear speed of an object directed along the tangent to the object's circular path.
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the further away from the center of the circle the faster that the object has to move to make up for the extra distance.
vt=rw |
