Mathematics, 18.10.2020 05:01 astultz309459

A rocket is launched from the top of a 99-foot cliff with an initial velocity of 122 ft/s. a. Substitute the values into the vertical motion formula h = –16t2 + vt + c. Let h = 0. b. Use the quadratic formula to find out how long the rocket will take to hit the ground after it is launched. Round to the nearest tenth of a second. 0=-16t^2+122t+99; 0.7s
0=-16t^2+99t+122; 8.4s
0=-16t^2+99t+122; 0.7s
0=-16t^2+122t+99; 8.4s

Answers: 1

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 19:30, nyceastcoast

Explain how you can find the missing fraction in 3 4/5 / (blank) 2 5/7. then find the missing fraction.

Answers: 2

continue

Mathematics, 21.06.2019 23:50, davfar334p47luq

Given δjkl : δxyz, find x. a)10 b)12 c)16 d)20

Answers: 2

continue

Mathematics, 22.06.2019 03:00, TheOriginalMeyah

The biologist has a second culture to examine. she knows that the population of the culture doubles every 15 minutes. after 1 hour and 15 minutes, her assistant found that 80,000 bacteria were present. a) what was the size of the initial population? b) predict the size of the culture at t=3 hours. what was the size of the population at 40 minutes? explain and justify your answers. c) create a graph of the population as a function of time. find an equation that can be used to predict the size of the population at any time t. d) examine the rate at which the bacteria culture is growing. how fast is the culture growing after 1 hour? after 1.5 hours? after 2 hours? use a time interval of h = 0.01 hours to estimate these rates. interpret these rates in terms of the context of the problem situation. how do these three rates compare?

Answers: 1

continue

Mathematics, 22.06.2019 03:10, castilloitc1120

If the alternate hypothesis of an experiment is “the true mean height of the giraffes is more than 15 feet” what is the null hypothesis?

Answers: 1

continue

You know the right answer?

A rocket is launched from the top of a 99-foot cliff with an initial velocity of 122 ft/s. a. Substi...