Aldi carts are lined up and chained together outside stores. When you insert a quarter, it unlocks the chain. When you return the quarter, it's returned. "Lend us a quarter and we'll lend you a cart," ...

TDF’s F1 cars are available in the U.S. through O’Gara Motorsport, which also provides driver training and hosts track events ...

Free body diagrams do not need to be drawn to scale but it can sometimes be useful if they are. It is important to label each arrow to show the magnitude of the force it represents. The type of ...