What You'll Get
Choose from Four Options
- $16 for five passes of drop-in play ($25 value)
- $27 for 10 passes of drop-in play ($50 value)
- $153 for one-hour game with 10 bubbles, including setup, takedown, and referee ($300 value)
- $195 for one-hour game with 20 bubbles, including setup, takedown, and referee ($400 value)
Drop in dates include:
6/5/2015, 7-8 p.m. 6/12/2015, 7-9 p.m. 6/19/2015, 7-9 p.m. 6/26/2015, 7-9 p.m. 7/10/2015, 7-9 p.m. 7/17/2015, 7-9 p.m. 7/24/2015, 7-8 p.m. 7/31/2015, 7-9 p.m.
Bending the Ball: A New Spin on Soccer Shots
Whenever a soccer ball curves, seemingly changing its orbit in midair, NASA scientists may rush to classify it as a planet. But in fact, the movement is due to yet another physics concept pioneered by Isaac Newton: the Magnus effect, a phenomenon first described in regard to tennis. Newton noted that topspin made the ball dip, whereas backspin made for a straighter trajectory. In other words, the way a ball spins affects its path in the air.
Usually, a ball curves in the same direction in which it’s spinning; air moves with the ball on the side that spins forward, pushing it in the other direction. A ball spinning counter-clockwise, for example, tends to bend to the left. But a ball’s movement may not always be so easy to predict. Its trajectory is also affected by the smoothness of the ball’s surface. In fact, a perfectly smooth (or laminar) ball would likely curve in the opposite direction of a rough-surfaced (or turbulent) ball when kicked in exactly the same manner.
Of course, nobody plays soccer with a perfectly smooth ball, despite the substantial benefit it would have on blooper-reel ratings. Even so, different stitching patterns do alter the roughness of a ball’s surface. This is why there seems to be a controversy every four years over a new ball design—even the coolest new look can have a drastic effect on a ball’s in-flight physics.
The Fine Print
Promotional value expires 120 days after purchase. Amount paid never expires. Limit 1 per person. Valid only for option purchased. All of the drop-in passes must be used the same day. Passes expire the day after they are redeemed. Must call or email for drop in dates; and must call for the 10 and 20 packages 5 days in advance. For one-hour rentals, purchaser is responsible for securing field, either indoor or outdoor, within metro-Detroit area. Field must have space for bubble inflation. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.