A launch angle of 35 degrees is a projectile fired at an acute angle. Depending upon a given velocity or mass of the object, you can determine the distance travelled, the time it remains in the air and you can estimate the landing destination of the projectile. Projectiles require sufficient force to obtain lift, where then the force of gravity applies and carries the object to its ultimate destination. While maintaining a constant velocity or speed, the horizontal motion of the projectile will remain in motion for a given time.