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A child of mass 60.0 kilogram is rescued from a hotel fire by leaping into a firefighters' net. The window from which he leapt was 8.0 meter above the net. The firefighters lower their arms as he lands in the net thus that he is brought to a complete stop in a time of 0.40 second.
a) Determine his change in momentum during the 0.40 second interval?
b) Determine the impulse on the net due to the child during the interval? [Hint: Do not ignore gravity.]
c) Find the average force on the net due to the child during the interval?
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A steel ball with mass 40.0g is dropped from a height of 2.00monto a horizontal steel slab and it rebounds 1.60m, calculate the impluse delivered to the ball during impact
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Objects of masses m1 = 4.00 kg and m2 = 9.00 kg are connected by a light string that passes over a frictionless pulley, Determine the acceleration of each object
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