In an idealized scenario where the only independent variable is time, the second law is effectively an “ordinary differential equation,” which one can solve to calculate the position or velocity of the object at any moment in time.īut in more involved situations, multiple forces act on the many moving parts of an intricate system over time. In high school physics, we learn about Newton’s second law of motion - force equals mass times acceleration - through simple examples of a single force (say, gravity) acting on an object of some mass.
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