A car moving at 9.5 m/s crashes into a tree and stops in 0.32 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 71 kg.Part (b)  What would the final velocity be, in meters per second, if the car with the 71-kg passenger had collided with (and stuck to) a car that has a mass equal to and is traveling in the opposite direction and at the same speed?

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A car moving at 9.5 m/s crashes into a tree and stops in 0.32 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 71 kg.

Part (b)  What would the final velocity be, in meters per second, if the car with the 71-kg passenger had collided with (and stuck to) a car that has a mass equal to and is traveling in the opposite direction and at the same speed?

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Step 1

(a) Using the kinematic equation of motion,

Step 2

By using equation of motion to solve for acceleration,

Step 3

The magnitude of...

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