Kinematics Question 670

Question: An aeroplane is flying horizontally with a velocity of 600 km/h at a height of 1960 m. When it’s vertically at a point A on the ground, a bomb is released from it. The bomb strikes the ground at point B. The distance Ab is

Options:

A) 1200 m

B) 0.33 km

C) 3.33 km

D) 33 km

Show Answer

Answer:

Correct Answer: C

Solution:

[c] Horizontal displacement of the bomb AB = Horizontal velocity × time available

$ AB=u\times \sqrt{\frac{2h}{g}} $

$ =600\times \frac{5}{18}\times \sqrt{\frac{2\times 1960}{9.8}} $

$ =3.33Km. $



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