physics
posted by ayanna .
An astronaut on the Moon fires a projectile from a launcher on a level surface so as to get the maximum range. If the launcher gives the projectile a muzzle velocity of 23 m/s, what is the range of the projectile? [Hint: The acceleration due to gravity on the Moon is only one sixth of that on the Earth.]

time in air:
hf=ho+ViSin45*t4.9/6 t^2
0=0 23Sin45*t4.9/6 t^2 solve for t.
range:
range= 23Cos45*t