A Civil War mortar called the Dictator fired its  90.7-kg (200-lb) shell a maximum horizontal distance of 4345 m (4752 yd) when the shell was projected  at an angle 450 above the horizontal. Air resistance may be ignored. A) What was the muzzle speed of the shell( the speed of the shell as it left the barrel of the mortar)? B) What maximum height above the ground did the shell reach? C) For what amount of time was the shell in the air?

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Projectile Motion