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tatilynnsoto17
tatilynnsoto17
08.07.2021 • 
Physics

A car is at rest at a stop sign and there is another stop sign 100 m down the road. The car can brake with an acceleration of 16 m/s/s. The car accelerates with a constant rate for some time before accelerating with that braking rate to come to a stop at the second stop sign. The entire trip takes 10 seconds. Let right be positive. Don't round until the end. Report using 3 digits. Don't enter units. 1. With what acceleration does the car begin its motion? (in m/s/s)
2. How much time does it accelerate with that acceleration? (in s)
3. What is the velocity of the car when the braking begins? (in m/s)
Two cars are facing each other. Car A is at rest while car B is moving toward car A with a constant velocity of 20 m/s. When car B is 100 from car A, car A accelerates toward car B with a content acceleration of 5 m/s/s. At the same time, car B begins to brake at a constant rate of 3 m/s/s. Let right be positive. Don't round until the end. Report using 3 digits. Don't enter units.
1. How much time elapses before the two cars meet? (in s)
2. How far does car A travel before the two cars meet? (in m)
3. What is the velocity of car B when the two cars meet? (in m/s)

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