Physics, 22.09.2020 14:01 Thejollyhellhound20
The aerodynamic resistance to motion of a car is nearly proportional to the square of its velocity. Additional frictional resistance is constant, so that the acceleration of the car when coasting may be written in the following form: a = - C1 - C2v2, where C1 = 2.9 m/s2 and C2 = 0.00012 m-1 are constants which depend on the mechanical configuration of the car.
Note: Acceleration is NOT a constant in this problem.
1) Using rectilinear motion equations, obtain a relationship between time t and velocity, v at that time.
2) Using the fact that acceleration is a function of velocity, and using rectilinear motion equations, obtain the relationship between distance traveled s and velocity, v at some arbitrary time, t.
3) If the car has an initial velocity v0 = 117 km/h when the engine is disengaged,
a) find the distance required for the car to come to a stop.
b) find the time taken for the car to come to a stop, if it starts at a time of 0 seconds.
Answers: 1
Physics, 21.06.2019 20:20
Copper has free electrons per cubic meter. a 71.0-cm length of 12-gauge copper wire that is 2.05 mm in diameter carries 4.85 a of current. (a) how much time does it take for an electron to travel the length of the wire? (b) repeat part (a) for 6-gauge copper wire (diameter 4.12 mm) of the same length that carries the same current. (c) generally speaking, how does changing the diameter of a wire that carries a given amount of current affect the drift velocity of the electrons in the wire?
Answers: 2
Physics, 21.06.2019 22:50
Calculate the heat capacity per object when the total energy is 4 quanta. (think of this in terms of increasing from 3.5 quanta of energy in the system to 4.5 quanta of energy in the system, if that were possible.) c4 = __ j/k/object
Answers: 2
Physics, 22.06.2019 05:30
What are similarities and differences of reflection, refraction, diffraction and absorption?
Answers: 1
Physics, 22.06.2019 08:00
Ms.hidalgo opens the door to her classroom. her classroom is 60 degrees and the air outside is 80. predict what will happen using your knowledge of how heat flows.
Answers: 2
The aerodynamic resistance to motion of a car is nearly proportional to the square of its velocity....
Computers and Technology, 18.10.2021 19:50
Mathematics, 18.10.2021 19:50
English, 18.10.2021 19:50
Mathematics, 18.10.2021 19:50
Mathematics, 18.10.2021 19:50
SAT, 18.10.2021 19:50
Mathematics, 18.10.2021 19:50