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Consider two side-by-side carts on a low-friction track. The carts are equipped with a spring-loaded plunger. When the plunger is activated, the carts push away from each other and are propelled in opposite directions. How does the relative mass of the two carts affect that outcome of the explosion? Does the more massive cart acquire the greater post-explosion velocity? Or is the least massive cart moving faster after the explosion? Or does the mass not make a difference? Explore these questions and more with the Exploding Carts Interactive.