Consider again the situation in number 2 for the following: Van Helsing shoots a 150g stake from a crossbow. Find the stake’s speed if we treat the crossbow as a spring with k = 600N/m that is drawn back 22cm. a. If the stake takes 0.06s to launch, what is the average force from the crossbow on the bolt? b. If he releases the 2kg crossbow when it fires, what is the recoil speed of the crossbow? c. If the stake rises to a height of 4m, what is its velocity at the peak of its trajectory?

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