2/162 A fireworks shell P fired in a vertical trajectory has a y-acceleration given by ay = -g -ku², where the latter term is due to aerodynamic drag. If the speed of the shell is 15 m/s at the instant shown, deter- mine the corresponding values of r, r, ", 0, 0, and 0. The drag parameter k has a constant value of 0.01 m-¹ 200 m 100 m
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