Physics help.......? PLEASE HELP ME?

PLEASE HELP AND SHOW YOUR WORK!!!!!

1) A 9.8 kg firework is launched straight up and at its maximum height 16 m it explodes into three parts. Part A (1.5 kg) moves straight down and lands 0.17 seconds after the explosion. Part B (3 kg) moves horizontally to the right and lands 6.5 meters from Part A. Part C moves to the left at some angle. How far from Part A does Part C land (no direction needed)?

2) A 3 kg object starts 1.6 meters from the ground on a 16 degree incline with friction m =0.09. When it hits the ground, it collides and sticks to a 5 kg object. The friction on the horizontal surface is m =0.28 How far do the objects travel away from the incline?

3) A 1 kg object slides down a frictionless track (starting 0.39 m above the ground) to a horizontal surface where it collides elastically with a 0.5 kg mass. 3.3 m later the 0.5 kg mass hits a k=11 N/m spring and compresses is 1 cm. What is the coefficient of friction on the horizontal surface?

4) A frictionless track with a loop of radius 38 cm sits on a table 1 meters above the ground. If a 0.27 kg object just makes the loop, how high above the table did the object start and how far from the table does it land?

5) A 2.63 kg spherical ball with radius 0.7 cm rolls on a track with a loop of radius 37 cm that sits on a table 1.1 meters above the ground. The last 1 meter section of the track is horzontal and is not connected to the rest of the track. 0.3 meters of this section of the track hangs over the edge of the table. The track has a linear mass density of 0.46 kg/m.

How high above the table must the rolling ball start to just make the loop?

How far does the ball travel along the loose length of track before the track starts to tip?

6) Two balls are conneted by a string that stretches over a massless, frictionless pulley. Ball 1 has a mass of 0.59 kg and is held 0.84 m above the ground. Ball 2 has a mass of 7.8 kg and is held 0.1 m above the ground. When the balls are released, ball 2 falls to the ground, looses 7 \% of its kinetic energy and rebounds to some maximum rebound height. When the balls are released, ball 1 travels to some maximum height before starting to fall. Assume that ball 1 reaches its maximum height during ball 2's rebound so that the string doesn't pull.

Calculate the maximum height of ball 1 from and ground and the rebound height of ball 2