Question

on a one lane road a person driving a car at v1=72 mi/h suddenly notice a truck 1.3 miles in front of him. The truck is moving in the same direction at v2=37 mi/h. in order to avoid a collision the person has to reduce the speed of his car to v2 during time interval. the smallest magnitude of acceleration required for the car to avoid collision is a period during this problem assume the direction of motion of the car is the positive direction.

Answer 1

Answer:

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