Consider someone driving down the highway at 70 miles per hour (31.3 m/s). The total mass of the driver and their car (as well as everything else in the car) is 1600kg.
Part A- How much work must friction do to make the car stop?
Part B- A tree suddenly falls on the highway 55m in front of the car, and the driver just barely manages to stop before hitting the tree. What is the magnitude of the force of friction necessary to do the work you calculated in part A just before the car hits the tree?
Part C- Now imagine that the driver had been traveling at 75 miles per hour (33.5 m/s) at the start instead. The coefficient of friction is still the same, so the force from friction will still be what you calculated in part B, which means the work done by friction will be the same as in part A. Under these circumstances, what will the car's speed be when it hits the tree?
Answers: 3
Physics, 22.06.2019 08:30
Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?
Answers: 3
Physics, 22.06.2019 17:00
How much energy is supplied to each coulomb of charge that flows through a 12-v battery?
Answers: 1
Physics, 23.06.2019 04:31
Which of the following is probably the least necessary character trait needed to be a good clinical nurse?
Answers: 3
Consider someone driving down the highway at 70 miles per hour (31.3 m/s). The total mass of the dri...
Geography, 28.06.2020 03:01
Mathematics, 28.06.2020 03:01