i don't understand what to do..
i've tried multiple times to get the answers,
but i can't. can anyone please assist me?
thank you so much!
1) http://i288.photobucket.com/albums/ll17 ... i/idk2.jpg
[it's a two part question..]
2) a shell is fired from the ground with an initial speed of 1.70x10^3 m/s (approximately five times the speed of sound) at an initial angle of 41.0 degrees to the horizontal. the acceleration due to gravity is 7.8 m/s^2. neglecting air resistance, find the shell's horizontal range. answer in units of m. also, how long is the shell in motion? answer in units of s.