AP Physics 1easymcq1 pt
A 0.50 kg ball falls from a height of 20 m (g = 10 m/s²). Its speed just before hitting the ground is
A.20 m/s
B.10 m/s
C.14 m/s
D.40 m/s
Explanation
Core Concept
mgh = ½mv² gives v = √(2gh) = √400 = 20 m/s.
Correct Answer
A20 m/s
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