A projectile is launched at an upward of angle of 30 degrees to the horizontal with a speed of 30 m/s. Calculate the horizontal and vertical components of the initial velocity for the projectile. Ignoring air resistance, how does the horizontal component of its velocity 1.0 s after launch compare with its horizontal component of velocity 2.0 s after launch? how does the velocity compare at those same times? Please show work, I am a bit confused on this...

Anonzero net force acts on a particle and does work. which one of the following statements is true? the kinetic energy of the particle changes, but the speed of the particle does not change. the kinetic energy of the particle does not change, but the speed of the particle does change. the kinetic energy of the particle changes, but the velocity of the particle does not change. the kinetic energy and the speed of the particle change, but the velocity of the particle does not change. the kinetic energy, speed, and velocity of the particle change.