A car is 200. m from a stop sign and traveling toward the sign at 40.0 m/s. If the driver realizes they must stop the car at this time. It takes 0.200 s for the driver to apply the brakes. What must the constant acceleration of the car be after the brakes are applied so that the car would come to rest at the stop sign?
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- A cement truck is 200 m from a stop light and traveling toward it at 40.0 m/s. At this time, the driver suddenly realizes that she must stop the truck in order to avoid an accident. If it takes 0.200 s for her to make this realization and apply the brakes, what must be the magnitude of the constant decceleration of the truck after the brakes are applied so that the truck will come to rest at the stop light? A) 3.42 m/s/s B) 4.17 m/s/s C) 2.87 m/s/s D) 2.08 m/s/s F) 3.89 m/s/sA speeder traveling at 2.86 m/s passes a motorcycle policeman at rest at the side of the road. The policeman accelerates at 1.23 m/s?. How long, in seconds, does it take the policeman to catch the speeder?The driver of a sports car traveling at 10.0 m/s steps down hard on the accelerator for 5.0 s and the velocity increases to 30.0 m/s. What was the average acceleration of the car during the 5.0-s time interval?
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