Question: During operation the jack hammer strikes the concrete surface with a force which is indicated in the graph. To achieve this the 1 . 9

During operation the jack hammer strikes the concrete surface with a force which is indicated in the graph. To achieve this the 1.9-kg spike S is fired into the surface at 90ms.(Eigure 1)
Part A
Determine the speed of the spike just after rebounding.
Express your answer to three significant figures and include the appropriate units.
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During operation the jack hammer strikes the

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