some more reading and research about projectile. Consider a projectile motion  on level ground, assuming negligible air resistance (the initial angle being neither 0  nor 90 degrees:  1. Is the velocity ever zero? Explain. 2. When is the velocity a minimum? Why? 3. When is the velocity a maximum? How? 4. Can the velocity ever be the same as the initial velocity at a time other than  at t=0? Explain. 5. Can the speed ever be the same as the initial speed a

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