Kinematics Question 673

Question: A body is thrown horizontally from the top of a tower of height 5 m.It touches the ground at a distance of 10 m from the foot of the tower.The initial velocity of the body is $ ( g=10ms^{2} ) $

Options:

A) $ 2.5ms^{1} $

B) $ 5ms^{1} $

C) $ 10ms^{1} $

D) $ 20ms^{1} $

Show Answer

Answer:

Correct Answer: C

Solution:

[c] $ S=u\times \sqrt{\frac{2h}{g}} $

therefore $ 10=u\sqrt{2\times \frac{5}{10}} $

therefore $ u=10m/s $



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