Physics, 15.07.2020 03:01 ricksterv5000
The kinetic energy KE of an object of mass m moving with velocity v is defined as KE -m2. If a force fx) acts on the object, moving it along the x-axis from xi to x2, the Work-Energy Theorem states that the net weight equal to the change in kinetic energy: mv2 - mv1, where V1 is the velocity at xi and v2 is the velocity at x2. Suppose that when launching a 700-kg roller coaster car an electromagnetic propulsion system exerts a force of 5.7x2 + 1.5x newtons on the car at a distance x meters along the track. Use the Work-Energy Theorem to find the speed of the car when it has traveled 60 meters.
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The kinetic energy KE of an object of mass m moving with velocity v is defined as KE -m2. If a force...
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