![]() This equation is exactly Equation 10. Newton’s second law of motion is more quantitative and is used extensively to calculate what happens in situations involving a force. ![]() It mathematically states the cause and effect relationship between force and changes in motion. Likewise, it gets easier to make that turn when the car’s speed is much less because the car’s inertia is lower – somewhere between the inertia of the speeding car and one that is parked. Identifying the first term on the left as the sum of the torques, and m r 2 as the moment of inertia, we arrive at Newton’s second law of rotation in vector form: I. Newton’s second law of motion is closely related to Newton’s first law of motion. If you are in a speeding car and you suddenly try to make a turn without decelerating, your car is probably going to shift over to the next lane, and you’re going to miss your turn completely because you failed to overcome the car’s inertia. This is pretty intuitive for most people. Likewise, when you want to stop an object in motion or steer it in another direction, you also need to overcome that object’s inertia to slow it down to a resting state.
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