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I solved 1 out of 2 correctly:
A shell is launched at 140 m/s 56.0 degrees above the horizontal. When it has reached its highest point, it launches a projectile at a velocity of 110 m/s 35.0 degrees above the horizontal relative to the shell.
1) Find the maximum height (in m) about the ground that the projectile reaches. Answer: 890 m
2) Find its distance (in m) from the place where the shell was fired to its landing place when it eventually falls back to the ground.