In general terms, it is in whatever direction you're facing.
I expect you ask because of the requirement that the ball is kicked forward on a kick-off. The definition on a kick-off is "more towards the opponent's goal line than your own."
The ball is in play when it is kicked and moves. The movement does not have to be forward.
This would not be possible because the moon has less gravity than earth does and it would just float up.
No, rugby doesn't have a wide receiver; that's more an American football term and in that game the ball can be thrown forward or kicked forward. In rugby (both codes), the ball can be kicked forward and passed laterally or behind the ball carrier only
it has to be kicked forward
It means the ball was hit (kicked) hard and straight forward.
A soccer ball curves when it is kicked due to the Magnus effect, which is caused by the spin applied to the ball. The spin creates a difference in air pressure on the sides of the ball, causing it to curve in the direction of the spin.
When a soccer ball is kicked with spin, it curves in the direction of the spin due to the Magnus effect, which causes the air pressure differences around the ball to create a curved path.
Forward
When a soccer ball is kicked, the spin applied to the ball causes it to curve in the air. This is known as the Magnus effect, where the spin creates a difference in air pressure around the ball, causing it to curve in the direction of the spin.
The ball must be passed either in line with the ball carrier OR as is normally seen to the rear of the ball carrier. A ball thrown forward, dropped forward of the carrier or knocked forward of the ball carrier is a penalty offense
Soccer balls curve when kicked due to the Magnus effect, which is caused by the spin applied to the ball. The spin creates a difference in air pressure around the ball, causing it to curve in the direction of the spin.
Knowing the trajectory of the ball as it is kicked upwards. Noticing it's change in direction with each little touch and yes, practise.