A projectile of mass m = 3 kg is fired with initial speed of 120 m/s at

Question:

A projectile of mass m = 3 kg is fired with initial speed of 120 m/s at an angle of 30° with the horizontal. At the top of it s trajectory, the projectile explodes into two fragments of masses 1 kg and 2 kg. The 2-kg fragment, lands on the ground directly below the point of explosion 3.6 s after the explosion.

(a) Determine the velocity of the 1-kg fragment immediately after the explosion.

(b) Find the distance between the point of firing and the point at which the 1-kg fragment strikes the ground.