(Answered) A 25-kg cannonball is red from the top of a cli as shown in

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A 2.5-kg cannonball is ?red from the top of a cli? as shown in the ?gure below. The cannonball leaves the cannon at a height of h = 75 m above the ground below. The cannonball is ?red at an initial speed of 120 m/s at an angle of θ = 30? above the horizontal. Use a coordinate system where the +y axis is along the height and the +x axis is along the ground.

(a) What is the maximum height above the ground the cannonball reaches?

(b) What is the speed of the cannonball just before it hits the ground?

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