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  3. a vehicle (truck a), with a mass of 1800 kg, is te

A vehicle (truck A), with a mass of 1800 kg, is tested for safety at a...

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Physics

  1. A vehicle (truck A), with a mass of 1800 kg, is tested forsafety at a lab by having another vehicle (truck B) crash into itfrom behind. Initially, Truck A is at rest and truck B approachesat about 45 km/hr. After the crash, truck B recoils back at 10km/hr, while truck A is pushed forward at 27 km/hr. Remember togive all answers in standard units. (This collision would likely beinelastic.)

  1. Draw a sketch showing the trucks before AND after thecollision, with your directions properly labeled.

  1. Given these results, what must have been the mass of truck B?(Assume neither car lost any mass during the collision.)

  1. How much did the total energy of the system (A + B) change? Wasthis change a gain or a loss of energy?

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