A student jumps from rest off a -high platform onto a thick foam landing mat

PHYSICS · Single correct · CBSE · Physics · Work, Energy and Power · Work, Energy and Power

Problem

A 60 kg60\,\text{kg} student jumps from rest off a 2.0 m2.0\,\text{m}-high platform onto a thick foam landing mat. The mat compresses 0.30 m0.30\,\text{m} while bringing the student to rest. Assuming the force exerted by the mat on the student is constant during the compression, what is the magnitude of that average force? (a) 7.8×103 N7.8\times10^{3}\,\text{N} (b) 4.5×103 N4.5\times10^{3}\,\text{N} (c) 3.9×103 N3.9\times10^{3}\,\text{N} (d) 2.0×103 N2.0\times10^{3}\,\text{N}

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