Amodel rocket is fired vertically upward from rest. its acceleration for the first three seconds is a(t) = 96t, at which time the fuel is exhausted and it becomes a freely "falling" body. nineteen seconds later, the rocket's parachute opens, and the (downward) velocity slows linearly to −16 ft/s in 5 s. the rocket then "floats" to the ground at that rate.
a) determine the position function s and the velocity function v (for all times t).
b) at what time does the rocket reach its maximum height?
what is that height? (round your answer to the nearest integer.)
c) at what time does the rocket land? (round your answer to one decimal place.)
Answers: 1
Physics, 21.06.2019 14:20
Physics make-up packetname_cle14. an observer hears a sound with a frequency of 400 hz. if the speed of sound is 340 m/s,what is the wavelength of the sound? a. 0.85 mb. 1.2 mc. 2.75 m13.6 m15. as sound travels from steel into air, its speed decreases. if the frequency of the wavedoesn't change, what happens to its wavelength? a. it increases(b) it decreasesc. it remains the samed. there is not enough information given
Answers: 1
Physics, 21.06.2019 19:00
What term do psychologists use to designate our personal awareness of feelings, sensations, and thoughts?
Answers: 1
Physics, 22.06.2019 06:00
Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?
Answers: 1
Amodel rocket is fired vertically upward from rest. its acceleration for the first three seconds is...
Chemistry, 16.12.2019 16:31
Mathematics, 16.12.2019 16:31
Biology, 16.12.2019 16:31
Mathematics, 16.12.2019 16:31
Chemistry, 16.12.2019 16:31
Health, 16.12.2019 16:31
Computers and Technology, 16.12.2019 16:31
Business, 16.12.2019 16:31