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
lara [203]
3 years ago
15

In a shopping mall, two elevators pass each other moving in opposite directions. Each elevator is moving at the same speed. The

relative velocity of one elevator to the other is 10 m/s. What is the velocity of each elevator relative to a person standing on the ground?

Mathematics
2 answers:
STALIN [3.7K]3 years ago
6 0

Problem 5

Say Up is positive. When the up elevator sees the separation increasing at a speed of 10 m/s it means that you have +5 - - 5 true to the observer below. He sees each of them moving at the same speed away from one another. Answer A.

Problem 6

6 looks right to me. A timer would be the second best answer but it starts at 0. Answer C

Problem 7

It can't be zero. Nothing would get anywhere if it was zero. When you look up and see a plane, isn't it going in the direction you think it's going? It can't appear to be going west. That would take it to Vietnam or Melbourne. It must be flying east when seen flying from ground level and since we are not asked to consider air resistance or the earth's rotation, the answer must be D.

Problem 8

I'll go with your definition.

Problem 9

It's moving forward as well, just not as quickly. 126 - 68 = 58 m/s if 126 is taken as positive. Answer D

Nata [24]3 years ago
5 0
Since both have same speed
v(rel.) x-(-x)= 10( from law of vector addition)
2x=10,x= 5m/sec
You might be interested in
How do you show work to 4-2+6•2
MatroZZZ [7]
4-2=2
6*2=12

2+12=14

14 is the answer
6 0
3 years ago
Read 2 more answers
Find the area of the figure below
nalin [4]

Answer:

36 I think, also to fintd the are of an object you count how many shapes its in the object:).

8 0
3 years ago
Could someone solve this for me.
Studentka2010 [4]
The answer is 7.6 units
5 0
2 years ago
In the function y=4x^2-5, what effect does the number -5 have on the graph, as compared to the graph of y=x^2
kati45 [8]
It moves the graph 5 steps downwards on the y axis.
3 0
4 years ago
The height of a stuntperson jumping off a building that is 20 m high is modeled by the equation h = 20 – 5t2, where t is the tim
Nostrana [21]

Answer:

\sqrt{2} - 1

Step-by-step explanation:

h = 20 – 5t2 = 15 -> t = 1

h = 20 – 5t2 = 10 -> t = \sqrt{2}

interval  \sqrt{2} - 1

8 0
2 years ago
Read 2 more answers
Other questions:
  • An element with mass 310 grams decays by 8.9% per minute. How much of
    15·1 answer
  • What is the midpoint of the segment shown below ?
    10·2 answers
  • A retailer buys cases of 24 shirts for $30/case and then resells them in packs of 5 for $8/pack. If the retailer sold all the sh
    7·2 answers
  • My math question to u<br><br>4 - 6x = 8
    6·2 answers
  • The amount of time it takes to finish a race might be a function of which of the following?
    10·2 answers
  • The difference of a number squared and the number is one less than four times the number.
    5·1 answer
  • PLEASE HELP!!!! MATH QUESTION!!!!
    14·1 answer
  • Which statement comparing 6² + 14 ÷ 2 and 100−82is true?
    14·1 answer
  • R144 for 12 tickets.how much per ticket?​
    14·1 answer
  • Write the following ratios 750 ml: 3L​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!