Q. An artillery shell is fired with initial velocity of 300 m/s at 55 angles above the horizontal. to clear an avalanche, it explodes on a mountainside 42s after firing. What is the x and y coordinates of the shell where it explodes, relative to its firing point?
Q. Bacteria vary somewhat in size, but a diameter of 2 is not unusual. What would be (1) the volume (in cubic centimetres) and (2) surface area (in square millimetres) of such a bacterium, assuming that it is spherical?