AP Physics 1hardmcq1 pt
A 0.10 kg ball dropped from 5.0 m bounces to 3.2 m (g = 10 m/s²). The impulse from the floor is about
A.1.8 N·s
B.0.20 N·s
C.0.90 N·s
D.1.0 N·s
Explanation
Core Concept
Impact speed √(2·10·5) = 10 m/s down; rebound √(2·10·3.2) = 8.0 m/s up. |Δp| = 0.10(10 + 8) = 1.8 N·s.
Correct Answer
A1.8 N·s
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