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A truck with a mass of 2.00 x 10 4 kg is travelling at 120.0 km/h. If the driver reduces the truck's speed to 50.0
A truck with a mass of 2.00 x 104 kg is travelling at 120.0 km/h. If the driver reduces the truck's speed to 50.0 km/h, then the truck's kinetic energy has changed by
9.18 x 106J
1.11 x 107 J
3.78 x 106J
1.39 x 105J
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