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
Anastaziya [24]
2 years ago
10

While John is traveling along a straight interstate highway, he notices that the mile marker reads 243 km. John travels until he

reaches the 143 km marker and then retraces his path to the 163 km marker. What is John’s resultant displacement from the 243 km marker? Answer in units of km.
Mathematics
1 answer:
loris [4]2 years ago
3 0

Answer:

The displacement is: - 80 i

Step-by-step explanation:

In order to answer the question, you have to apply the displacement formula, which is:

ΔX= Xf-Xi

Where ΔX is the displacement, Xf is the final position and Xi is the initial position. The formula represents the change in the position of an object from the origin.

Let the origin be in 0 km,with the x-axis positive to te right.

Notice that the displacement is a vector. The positions are:

Xf=163 km (i)

Xi= 243 km (i)

Because John starts in 243 km and finishes in 163 km.

Where i is the unit vector in the x direction.

Therefore:

ΔX= 163 i - 243 i

Solving:

ΔX= -80 i

Notice that for calculating the displacement you just need the initial and final position. It doesn't depend on the distance traveled.

You might be interested in
Picture above <br> Question above
miv72 [106K]

Answer:

you will pay 274.75 at month 5 for both companies

company A: 42.95x+60.00

company B. 49.95x+25.00

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Please help me ASAP!!! I think it's B but I don't know for sure
Katarina [22]

Answer: it's B

Step-by-step explanation:

you just have to use the AG and work backwards to find AD

7 0
3 years ago
Help I need to complete this before 3:00 pm
Oduvanchick [21]
It would be 64 x 8 x 8 =
3 0
3 years ago
If you help me I will love you forever
joja [24]

Answer:

I think the answer would be 22.15 but I'm not really sure.

7 0
3 years ago
Read 2 more answers
2. Find the area. The figure is not drawn to scale.<br> 4 cm<br> 17 cm
BabaBlast [244]
area=base x height so i’m thinking it’s 4x17=68
7 0
2 years ago
Other questions:
  • A level maths factor theorem <br>help in part (b) please​
    14·2 answers
  • The cost for roberta's college next year $11000 she has a Grant for $1500 a scholarship of $5000 she plans to earn 40% of the re
    15·1 answer
  • What is m∠CAD?<br><br><br><br> 25º<br><br> 90º<br><br> 100º<br><br> 115º
    8·2 answers
  • MrsEHolt Help [GEOMETRY!] [EASY PEASY LEMON SQUEEZY]
    9·2 answers
  • Every cereal box has a gift inside, but you cannot tell from the outside what the gift is. The store manager assures you that 18
    7·1 answer
  • Ms. Clint is comparing the sales of sweaters and gloves at her store for the past ten winter weeks. Select the true statement ba
    6·2 answers
  • 1. Petra tenía 49 canicas azules y dos canicas rojas. ¿Cuántas canicas deberá quitar Petra para qu
    5·2 answers
  • Which of the following is equivalent to 3^-8 × 3^4 <br> 3^-4<br> 3^-2<br> 3^-12<br> 3^-32
    5·1 answer
  • Can yall help me with this
    5·2 answers
  • Show your work to find X
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!