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A car moving at 10.5 m/s crashes into a tree and stops in 0.36 s. part a. Calculate the magnitude of the force, in newtons,

A car moving at 10.5 m/s crashes into a tree and stops in 0.36 s.

part a. Calculate the magnitude of the force, in newtons, the seatbelt exerts on a passenger in the car to bring him to a halt. The mass of the passenger is 72.5 kg.

part b. What would the final velocity be, in meters per second, if the car with the 72.5-kg passenger had collided with (and stuck to) a car that has an equal mass and is traveling in the opposite direction and at the same speed?

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