Physics

Physics, 19.10.2019 22:30, fredorivera

Amoving car decelerates for 5.0s and comes to a complete stop. it travels 75m in the process. a) determine its initial speed b)determine its rate of deceleration

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If a car decelerates at a rate of 5.1 m/s2, and if its initial speed was 24 m/s. how long will it take the car to stop?

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Car a is traveling at 40 mi/h when it enters a 30 mi/h speed zone. the driver of car a decelerates at a rate of 16 ft/s2 until reaching a speed of 30 mi/h, which she then maintains. when car b, which was initially 60 ft behind car a and traveling at a constant speed of 45 mi/h, enters the speed zone, its driver decelerates at a rate of 20 ft/s2 until reaching a speed of 28 mi/h. knowing that the driver of car b maintains a speed of 28 mi/h, determine (a) the closest that car b comes to car a, (b) the time at which car a is 70 ft in front of car b.

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Amoving car decelerates for 5.0s and comes to a complete stop. it travels 75m in the process. a) det...

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