Physics, 06.11.2019 20:31 DAVISJOS00123
Acar is travelling at 40.0 m/s^-1. the driver sees an emergency ahead and 0.50 s later slams on the brakes. the acceleration of the car is -4 m/s^-2. what distance will the car travel between the moment the driver first sees the emergency and the moment the car stops?
Answers: 2
Physics, 21.06.2019 22:00
Jason and mia are both running in a race. as they approach the finish line, you being the physicist that you are decide to time how long it takes them to reach the end of the race. when you start your stop watch (you can take this as time t = 0 s) you notice that mia is an unknown distance d ahead of jason and both are moving with the same initial velocity v_0. you also notice that jason is accelerating at a constant rate of a_j, while mia is deaccelerating at a constant rate of -a_m. jason and mia meet each other for the first time at time t = t_1. at this time (t = t_1) jason's velocity is two times that of mia's velocity, meaning v_j (t_1) = 2v_m (t_1). a) draw the position vs. time graph describing mia's and jason's motion from time t = 0 to time t = t_1. clearly label your axes and initial conditions on your graph. b) draw the velocity vs. time graph describing mia and jason's motion from time t = 0s to time t = t_1. clearly label your axes and initial conditions on your graph. c) how long from when the stop watch was started at t = 0s did it take mia and jason to meet? express your answer in terms of know quantities v_0, a_m, and a_j. d) when the stop watch started at time t = 0s, how far apart, d, were mia and jason? express your answer in terms of know quantities v_0, a_m, and a_j.
Answers: 1
Physics, 22.06.2019 00:50
Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 10.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.90 m/s; (b) he is then lifted at the constant speed of 4.90 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 68.0 kg rescue by the force lifting him during each stage?
Answers: 1
Physics, 22.06.2019 05:00
Choose a synonym for the underlined homonym (a word with two or more meanings). i did not expect the boat to rock so much. a. boulder c. astound b. sway d. shock
Answers: 3
Physics, 22.06.2019 08:30
Hey student studies gravity using objects that have the same mass which two objects have the greatest gravitational force acting between them a. 100kg 1.0m 100kg b. 100kg 2.0m 100kg c. 100kg 2.0m 100kg big d. 100kg big 3.0m 100kg big
Answers: 1
Acar is travelling at 40.0 m/s^-1. the driver sees an emergency ahead and 0.50 s later slams on the...
English, 20.06.2021 14:00
English, 20.06.2021 14:00
Business, 20.06.2021 14:00
English, 20.06.2021 14:00
Business, 20.06.2021 14:00
Biology, 20.06.2021 14:00
Mathematics, 20.06.2021 14:00
Arts, 20.06.2021 14:00
Social Studies, 20.06.2021 14:00
Business, 20.06.2021 14:00
Mathematics, 20.06.2021 14:00
Mathematics, 20.06.2021 14:00
English, 20.06.2021 14:00
Mathematics, 20.06.2021 14:00
English, 20.06.2021 14:00
Mathematics, 20.06.2021 14:00