contestada

HELP PLEASE SLOVE THANK SO MUCH
A mortar, angled 45 degrees from the horizontal, shoots a round with an initial velocity of 90 meters per second.
1) Draw a diagram of the described scenario and organize your
variables along x and y dimensions.
2) For when the round reaches maximum height, calculate for:
a) Time of travel
b) Horizontal displacement
3) For when the round reaches maximum range, calculate for:
a) Time of travel
b) Horizontal displacement