Kinematics Question 634

Question: For a stone thrown from a lower of unknown height, the maximum range for a projection speed of 10 m/s it’s obtained for a projection angle of 30. The corresponding distance between the foot of the lower and the point of landing of the stone is

Options:

A) 10m

B)  20m

C) (20/3) m 

D)(10/3) m

Show Answer

Answer:

Correct Answer: D

Solution:

[d] tanθ=u2Rg

R=u2gtanθ=10010×3=103 m



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