I'm just having trouble with a few problems and really would appreciate some help:

Projectile Motion

1. A bullet is fired with a velocity whose vertical and horizontal components are Vy and Vx respectively. If the horizontal component of velocity is 600 m/s, find the angle of projection that must be used for the bullet to hit a target 2m above the muzzle and 500m distant from it.

Simple Harmonic Motion2. A particle starts from rest at x = 10 and proceeds with simple harmonic motion about x = 0 so that after 2 seconds it reaches x = 5. Find:

(a) an expression for the displacement (x) a any time t.

(b) the speed at x = 0

(c) the amplitude and period of motion

(d) the maximum speed

(e) the maximum acceleration

Thanks!