posted by Lindsay .
An artillery shell is fired with an initial velocity of 300m/s at 55.0 degrees above the horizontal. To clear an avalanche, it explodes on a mountainside 42.0s later. What are the x and y coordinates of the shell where it explodes, relative to its firing point?
a) (1.68km, 7.23km), b) (1.68, 1.03km) c) (1.03km, 1.42km) d) (7.23km, 1.42km) e) (7.23km, 1.68km)
I do not know.