You are driving at the speed of 27.7 m/s (61.9764 mph) when suddenly the car in front of you (previously traveling at the same speed) brakes and begins to slow down with the largest deceleration possible without skidding. considering an average human reaction, you press your brakes 0.543 s later. you also brake and decelerate as rapidly as possible without skidding. assume that the coefficient of static friction is 0.804 between both cars’ wheels and the road. calculate the acceleration of the car in front of you when it brakes. calculate the braking distance for the car in front of you. find the minimum safe distance at which you can follow the car in front of you and avoid hitting it (in the case of emergency braking described here).
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Physics, 22.06.2019 04:30, leilaford2003
Afeather of mass 0.001 kg falls from a height of 2 m. under realistic conditions, it experiences air resistance. based on what you know about friction, what can you say about the kinetic energy of the feather as it reaches the ground? acceleration due to gravity is g = 9.8 m/s2. a. ke < 0.0196 j b. ke = 00196 j c. je = 0 j d. ke > 0.0196 j
Answers: 1
Physics, 22.06.2019 07:30, bell777
30 points - when can a theory be modified if a new type of technology allows for new observations that raise new questions? a. immediately, while the questions about the theory are being asked b. after new hypotheses related to the theory are tested in experiments c. only after the new observations disprove all parts of the theory d. while scientists begin to think about how the theory could improve
Answers: 1
You are driving at the speed of 27.7 m/s (61.9764 mph) when suddenly the car in front of you (previo...
Mathematics, 11.02.2020 23:24
Physics, 11.02.2020 23:24