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A student jumping on a trampoline reaches a maximum height of h = 1.31 m. The maximum height is measured from the surface of trampoline in its unstretched position. The student has a mass of m = 74 kg.

(a) What is the student's speed immediately before she reaches the trampoline after the jump in m/s?

(b) If, when she lands on the trampoline, she stretches the trampoline down d = 0.75 m, what is the spring constant k in N/m of the trampoline?

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