A model rocket is fired vertically upward from rest. Its acceleration for the first three seconds is a(t) = 66 t, at which time the fuel is exhausted and it becomes a freely "falling" body. 15 seconds later, the rocket's parachute opens, and the (downward) velocity slows linearly to -23 ft/s in 5 s. The rocket then "floats" to the ground at that rate.
Determine the position function s and the velocity function v (for all times t).
Answers: 1
Physics, 22.06.2019 04:30
Which of the following are not typically included in the periodic table? a. atomic mass b. element symbol c. isotopes d. number of electrons
Answers: 2
Physics, 22.06.2019 05:00
Wavelength,frequency,and energy are related.what happens to a wave as it’s wavelength gets shorter?
Answers: 2
Physics, 22.06.2019 05:10
What is the electric force acting between two charges of -0.0045 c and -0.0025 c that are 0.0060 m apart? use fe=kq1q2/r^2 and k = 9.00 x 10^9 n*m^2/c^2 a. 1.7 x 10^7 n b. -1.7 x 10^7 n c. -2.8 x 10^9 n d. 2.8 x 10^9 n
Answers: 1
Physics, 22.06.2019 05:20
Which statement is true? a. kepler's laws apply only to the motion of earth. b. kepler's laws can be used to predict eclipses. c. kepler's laws are true for a central force that is directly proportional to distance. d. kepler's laws can be deduced from newton's laws of motion and gravity.
Answers: 2
A model rocket is fired vertically upward from rest. Its acceleration for the first three seconds is...
Mathematics, 21.07.2019 04:23
History, 21.07.2019 04:23
History, 21.07.2019 04:23
History, 21.07.2019 04:23
Geography, 21.07.2019 04:23
Mathematics, 21.07.2019 04:23
English, 21.07.2019 04:23
Computers and Technology, 21.07.2019 04:23
Physics, 21.07.2019 04:23
History, 21.07.2019 04:23
Mathematics, 21.07.2019 04:23
Social Studies, 21.07.2019 04:23
History, 21.07.2019 04:23