A Tesla Model Y of mass 1990 kg collides head-on with a park…
A Tesla Model Y of mass 1990 kg collides head-on with a parked Cybertruck of mass 3000 kg. Spring mounted bumpers in each vehicle ensure that the collision is essentially elastic. After the collision, the velocity of the truck is 17 km/h in the same direction as the Model Y’s initial velocity. What was the initial speed of the Model Y?
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