3 An object moves along the line from point I to poimt 2 in ime Ar A B C Suppose

Question

3 An object moves along the line from point I to poimt 2 in ime Ar A B C Suppose that the object is speeding ap. Which of the labeled points A, B, or C cowld correspond to the lo ation ofthe object at time /27 goint B lies halfway between points Iand 2.) Explain. a. b. Suppose that the object is alowing down. Which of the labeled points A, B, er C could correspond to the location of the object at time Aar27 Explain 4. Most cars have a speedometer, an odometer, and a clock a. Describe how you could use these devices to determine the instantaneous speed of the car. average speed of the car. b. Describe how you could use these devices to determine the

Explanation / Answer

3)

1) If an object is speeding up, the initial half of the distance is to be covered in a greater time than the later half. Hence, at time t/2 it should be before the mid point. i.e. point A.

2) If it is speeding down it will take more time to cover the later half distance, because the speed will be lower in that portion of its journey. Hence at time t/2, it should be at point C.

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