True or false Volleyball

IN VOLLEYBALL, TEAMS MUST WIN BY TWO.

EACH TEAM MAY HIT THE BALL UP TO THREE TIMES.

THE SAME PERSON IS NOT ALLOWED TO HIT THE BALL TWO TIMES IN A ROW.

Ascrew incorporates which other simple machine? lever wheel and axle inclined plane pulley

Alead ball is dropped into a lake from a diving board 5m above the water . it hits the water with a certain velocity and then sink with constant velocity in bottom . it reaches the bottom 5 second after it is dropped if g= 10m/s2 . find depth of the lake and average velocity of the ball ?

The two required components for a generator are