If a moving train doubles its speed , what will be the change in ots kinetic enetgy ?
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In fact, kinetic energy is directly proportional to mass: if you double the mass, then you double the kinetic energy. ... A car moving 40 mph has four times as much kinetic energy as one moving 20 mph, while at 60 mph a car carries nine times as much kinetic energy as at 20 mph.
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if you double the speed of any object doubles kinetic energy becomes fourth times the speed of object
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