The Green Goblin climbs to the top of the Baxter building, 15 m above the ground, and lobs a pumpkin bomb into the air. The Goblin is able to toss the bomb at an angle of 60 along a perfect parabolic path. Spiderman notes that it takes exactly 2.6 seconds for the pumpkin bomb to reach maximum height. Find :

a. The initial speed of the pumpkin bomb

b. The horizontal range of the projectile

c. The total time in flight for the projectile

Please use kinematic equations