At t = 0, one toy car is set rolling on a straight track with initial position 16.5 cm, initial velocity -3.4 cm/s, and constant acceleration 2.30 cm/s2. At the same moment, another toy car is set rolling on an adjacent track with initial position 9.5 cm, initial velocity 6.20 cm/s, and constant zero acceleration.
(a) At what time, if any, do the two cars have equal speeds? (Enter NA if the cars never have equal speeds.)
(b) What are their speeds at that time? (Enter NA if the cars never have equal speeds.)
(c) At what time(s), if any, do the cars pass each other? (If there is only one time, enter NA in the second blank. If there are two times, enter the smaller time first. If they never pass, enter NA in both blanks.)
(d) What are their locations at that time? (If there is only one position, enter NA in the second blank. If there are two positions, enter the smaller position first. If they never pass, enter NA in both blanks.)
(e) Explain the difference between question (a) and (c)
Answers: 2
Physics, 21.06.2019 21:30
In a load, the load is paralel to the shaft. n a. angular n b. thrust n c radial n d. none of the above
Answers: 1
Physics, 22.06.2019 06:00
Using a pedometer, you walk 3000 steps in 20 minutes, so your speed is 150 steps/min. each of your steps is 0.7 m long. what is your speed? 150 steps/min=/s=/h
Answers: 1
Physics, 22.06.2019 06:30
Alead ball is dropped into a lake from a diving board 5m above the water . it hits the water with a certain velocity and then sink with constant velocity in bottom . it reaches the bottom 5 second after it is dropped if g= 10m/s2 . find depth of the lake and average velocity of the ball ?
Answers: 1
Physics, 22.06.2019 10:30
Carbon is allowed to diffuse through a steel plate 15 mm thick. the concentrations of carbon at the two faces are 0.65 and 0.30 kg c/m^3 fe, which are maintained constant. if the preexponential and activation energy are 6.2 x 10-7 m2 /s and 80,000 j/mol, respectively, compute the temperature at which the diffusion flux is 1.43 x 10^-9 kg/m^2 -s.
Answers: 3
At t = 0, one toy car is set rolling on a straight track with initial position 16.5 cm, initial velo...
Mathematics, 25.01.2022 20:40
Business, 25.01.2022 20:40
Mathematics, 25.01.2022 20:40
Social Studies, 25.01.2022 20:40
Mathematics, 25.01.2022 20:40
Biology, 25.01.2022 20:40
Mathematics, 25.01.2022 20:50
English, 25.01.2022 20:50
Biology, 25.01.2022 20:50
Mathematics, 25.01.2022 20:50
Arts, 25.01.2022 20:50
History, 25.01.2022 20:50
History, 25.01.2022 20:50
Spanish, 25.01.2022 20:50
Physics, 25.01.2022 20:50