College Physics with MasteringPhysics 7th Edition by Jerry Wilson,Anthony Buffa,Bo Lou

Exercise 34

The apparatus for a popular lecture demonstration is shown in Fig. A gun is aimed directly at a can, which is released at the same time that the gun is fired. This gun won't miss as long as the initial speed of the bullet is sufficient to reach the falling target before the target hits the floor. Verify this statement, using the figure. [ Hint : Note that y o = x tan .

FIGURE A sure shot See Exercise. (Not drawn to scale.)