Solve what is asked on the problem. Show your complete and detailed solutions. 1. The initial speed of a cannon ball is 0.20 km/s. If the ball is to strike a target that is at a horizontal distance of 3.0 km from the cannon, what is the minimum time of flight for the ball? 2. A ball is thrown horizontally from the top of a building O.10 km high. The ball strikes the ground at a point 65 m horizontally away from and below the point of release. What is the speed of the ball just before it strikes the ground? For items 3-4. A projectile is fired at an angle of 60.0° above the horizontal with an initial speed of 30.0 m/s. 3. What is the magnitude of the horizontal component of the projectile's displacement at the end of 2 s? 4. How long does it take the projectile to reach the highest point in its trajectory?

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Projectile Motion