Get Physical: this week is about all the ways the iPhone can help you enjoy your favorite sports. If you've got a sweet ride, Dynolicious ($12.99, available here) lets you measure just how sweet it is. This app uses the iPhone's built-in accelerometer to measure your vehicle's 0-60 acceleration, quarter mile elapsed time, horsepower, lateral Gs, and several other metrics. You can even save test results to find trends with future testing.