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
Alika [10]
3 years ago
5

An elevator is initially moving upward at a speed of 12.00 m/s. the elevator experiences a constant downward acceleration of mag

nitude 4.00 m/s2 for 3.00 s. (a) find the magnitude and direction of the elevator’s final velocity. (b) how far did it move during the 3.00 s interval?
Physics
1 answer:
harina [27]3 years ago
8 0
The two equations used in this problem is from the derived equations of rectilinear motion at a constant acceleration. 

a = (v - v₀)/t
2ax = v² - v₀²
where
a is the acceleration
x is the distance 
v is the final velocity
v₀ is the initial velocity
t is the time

Part a.) The acceleration is negative because it is moving downward: a = -4 m/s². The initial velocity is v₀ = 12 m/s and t is 3 s.

-4 = (v - 12)/3
v = 0 m/s
Thus, after 3 seconds the elevator comes to a stop.

Part b.) 

2(-4)x = 0² - 12²
x = 18 m
The elevator has traveled a distance of 18 m within 3 seconds.
You might be interested in
Which of Kepler's laws states that planets sweep areas in equal times?
rodikova [14]
Keplers laws states that planets sweep areas in equal times is second
8 0
3 years ago
What is the chemical formula for dicarbon hexafluoride?
ExtremeBDS [4]

Answer:

I believe its D

Explanation:

6 0
3 years ago
Read 2 more answers
Select whether the argument is an example of a deductive or an inductive argument:
viva [34]
The answer is a inductive
7 0
3 years ago
Chemical equations should be balanced so that they demonstrate the law of conservation of mass. Which of the following statement
faust18 [17]

Answer:

The products must contain the same numbers and types of atoms

7 0
2 years ago
_________ liquids and gases exert a buoyant force.
Eduardwww [97]

Answer:

C. Both

Explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • Two objects, labeled A and B, are the same size. Object A has a density of 1.21 g/cm3. Object B has a density of 1.37 g/cm3. Bot
    15·2 answers
  • Please help on this physics question
    15·1 answer
  • What is another name for the electromagnetic spectrum?
    5·1 answer
  • Spiral galaxy rotation curves are generally fairly flat out to large distances. Suppose that spiral galaxies did not contain dar
    5·1 answer
  • Terry is convinced that heating peanut butter will increase its mass so that it covers more bread. Is he correct?
    10·1 answer
  • explain why a circulatory system is important in meeting the needs of all cells throughout an animals body
    10·1 answer
  • Not a assignment question, just wanna know if scientists know what’s beyond the edge universe
    5·2 answers
  • Pls give me an example of newton's 1 ,2 ,3 law of motion pls this is due tomorrow
    7·1 answer
  • A car starts from rest at a stop sign. It accelerates at 2.0 m/s2 for 6.2 seconds, coasts for 2.5 s , and then slows down at a r
    8·1 answer
  • An 1876 N crate is being pushed across a level force at a constant speed by a force of 747 N. What is the coefficient of kinetic
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!