physics

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A rifle is aimed horizontally at a target 30 m away. The bullet hits the target 1.9 cm below the aiming point. What are the a) the bullet's time of flight and b) its speed as it emerges from the rifle?

A) is expose to be 62ms
B) is expose to be 480m/s
this is from by book. But I am getting wrong answers What am I doing wrong?

How long does it take to fall 1.9 cm?

d=1/2 g t^2 solve for time.

Now, that is the same time it took to go 30 m horizontally. Figure speed.

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