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For a particular intersection, the following applies at a given moment. - A car is 1 km east of the intersection and is traveling due

For a particular intersection, the following applies at a given moment.

- A car is 1 km east of the intersection and is traveling due west at a speed of 60 km/h.

- A bus is 1 km north of the intersection and travels at a speed of 50 km/h due north.

What is the rate of change of the distance between the car and the bus (as the crow flies) at this instant? (in km/h)

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