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10 cards from this deck
Sum of kinetic and potential energies
K=12mv2K = \frac{1}{2}mv^2K=21mv2
Constant (speed is constant)
Ug=mghU_g = mghUg=mgh
Constant (height doesn't change)
Zero (energy is constant)
Perpendicular (force to centre, velocity tangent)
Zero (W=Fs=0W = Fs = 0W=Fs=0)
Zero (returns to initial position)
htop=hbottom+2rh_{\text{top}} = h_{\text{bottom}} + 2rhtop=hbottom+2r
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