1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
zalisa [80]
3 years ago
5

An object is launched upward with an initial velocity of 64 feet per second from a platform 80 feet high. Write a model for the

object? How many seconds until the maximum height is reached? What will be the maximum height? How many seconds until the object hits the ground
Mathematics
1 answer:
Alex777 [14]3 years ago
3 0
Using one of the equations for costant acceleration 
s = ut + 0.5gt^2 + 80
s = 64t - 16t^2  + 80

s = -16t^2 + 64t + 80
   = -16[ t^2 - 4t) + 80
   = -16 ( t - 2)^2 + 64 + 80
   = -16(t - 2)^2 + 144
Time to maximum height = 2 seconds
Maximum height = 144 ft

Displacement when it hits the ground  = -80 so

-80 = -16t^2 + 64t + 80

solve for t 

t = 5.74 seconds




You might be interested in
Each of the 25 students in Mr Walker's class sold 16 raffle tickets. If each ticket costs $15 how much money did Mr Walker's stu
ludmilkaskok [199]

Answer: $6000

Hope this helps!-xoxo

5 0
3 years ago
RESOLVER LOS SIGUIENTES SISTEMAS DE ECUACIONES APLICANDO EL METODO DE SUSTITUCION
kiruha [24]

Answer:

x = 1/2; y = 1/3

Step-by-step explanation:

2x + 3y = 2     Eq. 1

-6x + 12y = 1     Eq. 2

Eq. 1

2x + 3y = 2

2x = -3y + 2

x = -3/2 y + 1

Eq. 2

-6x + 12y = 1

De Eq. 1 sabemos que x = -3/2 y + 1

-6x + 12y = 1

-6(-3/2 y + 1) + 12y = 1

9y - 6 + 12y = 1

21y - 6 = 1

21y = 7

y = 7/21

y = 1/3

Eq. 1

2x + 3y = 2

2x + 3(1/3) = 2

2x + 1 = 2

2x = 1

x = 1/2

Respuesta: x = 1/2; y = 1/3

3 0
3 years ago
What is the surface area of this right rectangular prism?
horrorfan [7]
Surface=2(5 x 4)+2(4 x 7)+2(5 x 7)=2(20)+2(28)+2(35)=40+56+70=166

Answer: 166 cm²
5 0
3 years ago
Read 2 more answers
Can someone help me on this plz and thanks
nirvana33 [79]

Answer:

- 7/4

Step-by-step explanation:

y1 - y2 over x1 - x2 with the points (-3,4) and (1,-3)

-3 - 4 over 1 - (-3) --> -7/ 4

4 0
2 years ago
Read 2 more answers
Is there a x=-2 in these equations
dem82 [27]

plug in the x for all of those to find y


6 0
3 years ago
Read 2 more answers
Other questions:
  • Three tickets to a concert cost $54. How much do 7 tickets cost? A. $58 B. $72 C. $108 D. $126
    8·2 answers
  • Pleease help <br><br>Solve for x​
    10·1 answer
  • George's sandbox requires 32 cubic feet of sand to fill how many bags of sand does he need to fill the sand box if each bag hold
    12·1 answer
  • Ravi needs to buy some pencils. Brand A has 36 pencils for $8.52. Brand B has a pack of 48 pencils for $9.98. Find the unit pric
    7·1 answer
  • Which statement best reflects the solution(s) of the equation?
    14·1 answer
  • The circule by X^2 + Y^2- 2y-11=0
    8·1 answer
  • HELP PLEASE DUE AT 10:30 PM I AM VERY LIGHT HEADED!!!!
    11·2 answers
  • ANSWERRRR IF UR COOL!! Plssss ILL MARK BRAINLEST Ty!!! So much ilyyyyyyy
    6·2 answers
  • Please answer i will brainliest:D
    12·2 answers
  • Not a Perfect Cube
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!