Two cars have the same mass. Car 1 is travelling northward at a speed of 45 mi/hr. Car 2 is travelling southward at a speed of 45 mi/hr. The cars a)  have the same momentum and kinetic energy. b)  have the same momentum but different kinetic energies. c)  have different momenta but the same kinetic energy. d)  Have different momenta and kinetic energy

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A: Given, The impulse is J=-75.0t2+1325.00t3

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Q: need help

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A: (i) momentum of the ball after impact pbf=mbvb=46 g61 m/s10-3 kg1 g=2.8 kg·m/s

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