The answer is D “Plaque can build up and prevent oxygen from reaching the brain”.
Answer:
ball hit into the net, may still be kept in play (up to 3 hits) provided that a player does not make contact with the net. Players may not touch the net. If 2 opposing players touch the net simultaneously, the ball is declared dead and is replayed
Four times greater.
Laws of physics state that force will always be the result of the square of the speed. For example, if you tripled the speed the impact would be 9 times.
