Constant acceleration: A car is 200 m from a stop sign and traveling toward the sign at 40 m/s. At this time, the driver suddenly realizes that she must stop the car. If it takes 0.2 s for the driver to apply the brakes, what must be the magnitude of the constant acceleration of the car after the brakes are applied so that the car will come to rest at the stop sign? Hint: It takes 0.2 s to apply the brake
Constant acceleration: A car is 200 m from a stop sign and traveling toward the sign at 40 m/s. At this time, the driver suddenly realizes that she must stop the car. If it takes 0.2 s for the driver to apply the brakes, what must be the magnitude of the constant acceleration of the car after the brakes are applied so that the car will come to rest at the stop sign? Hint: It takes 0.2 s to apply the brake
Physics for Scientists and Engineers with Modern Physics
10th Edition
ISBN:9781337553292
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter2: Motion In One Dimension
Section: Chapter Questions
Problem 9P: Figure P2.9 shows a graph of vx versus t for the motion of a motorcyclist as he starts from rest and...
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Constant acceleration: A car is 200 m from a stop sign and traveling toward the sign at 40 m/s. At this time, the driver suddenly realizes that she must stop the car. If it takes 0.2 s for the driver to apply the brakes, what must be the magnitude of the constant acceleration of the car after the brakes are applied so that the car will come to rest at the stop sign?
Hint: It takes 0.2 s to apply the brake.
A. 2.89 m/s2
B. 3.89 m/s2
C. 4.17 m/s2
D. 3.42 m/s2
E. 2.08 m/s2
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