Kinematics Question 132
Question: A hall has the dimensions $ 10m\times 12m\times 14m. $ A fly starting at one corner ends up at a diametrically opposite corner. What is the magnitude of it’s displacement
Options:
A) 17 m
B) 26 m
C) 36 m
D) 20 m
Correct Answer: D Diagonal of the hall = $ \sqrt{l^{2}+b^{2}+h^{2}} $ $ =\sqrt{10^{2}+12^{2}+14^{2}} $ $ =\sqrt{100+144+196} $ $ =\sqrt{400}=20m $
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