A Couple problems im having trouble with. 1.A ball is thrown with a speed of 30 m/s and at an angle of 40 degrees. How high does it go above the cliff to the nearest tenth of a meter? Ok, well i worked that portion out...and im fairly sure it's 19 meters exactly....but feel free to double check, but this portion troubles me. In the previous problem, if the ball hits the ground 4.2 seconds later, how high to the nearest tenth of a meter is the cliff? 2.A baseball is thrown horizontally off a cliff with a speed of 14 m/s. What is the horizontal distance, to the nearest tenth of a meter, from the face of the cliff after 2.8 seconds? That parts easy..39.2 meters...but once again theres a hard part i can't get.. In the previous problem, to the nearest tenth of a meter, how far has it fallen in that time? help... 3.A vector has x component 8.2 and y component 7.7 . What is its magnitude to the nearest tenth of a unit? That ones suppose to be an easy one...but i don't know how to find magnitude....i feel dumb. What is the direction of the vector in Problem 3 to the nearest tenth of a degree? (Report your results in the format -180 to 180.) I don't understand even how to set this up. sooo please please help me out a bit, just if someone could show me how to set up and work through these that'd be fantastic. I didn't show attempts at the problems, b/c the ones i knew how to attempt i got all the way through..the others i have no idea about..im really bad with vectors.