cassie has just finished her session on the trampoline during pe. as she prepares to exit the trampoline, her vertical momentum is reduced by a series of three resistive impulses with the bounce mat. just prior to this series of impulses, her 48.5-kg body is moving downward at 8.20 m/s. on the first impulse, cassie experiences an average upward force of 230 n for 0.65 seconds. the second impulse of 112 n•s lasts for 0.41 seconds. the last impulse involves an average upward force of 116 n which cases a 84 kg•m/s momentum change. what vertical velocity does cassie have after these three impulses?
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identify the known and unknown quantities in an organized manner. equate given values to the symbols used to represent the corresponding quantity - e.g., m = 1.50 kg, vi = 2.68 m/s, f = 4.98 n, t = 0.133 s, vf =
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