Question 1: To pitch a good curve ball, do you need to give the ball spin when you throw it? Yes No Unanswered Question 2: Do the dimples on a golf ball increase the range of the golf ball? Yes No Unanswered Question 3: A plane that has a speed of Mach 3 moves faster than sound. Yes No Unanswered Question 4: In the International System of units, "foot" is a unit. Yes No Unanswered Question 5: To make a golf ball go further, would you have to give it backspin rather than topspin? Yes No Unanswered