Question

# A bullet is dropped from the same height when another bullet is fired horizontally. They will hit the ground

A
one after the other
B
simultaneously
C
depends on the observer
D
none of these

Solution

## The correct option is B simultaneously Time taken to reach the ground  depends on the vertical component of velocity, not horizontal component of velocity. $$u_y =0$$ $$s=u_yt + \dfrac{1}{2}gt^2=\dfrac{1}{2}gt^2$$ $$\Rightarrow t = \sqrt{\dfrac{2s}{g}}$$ Since $$s_1=s_2$$ therefore $$t_1 =t_2$$ Physics

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