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
Elena-2011 [213]
4 years ago
14

A train travels 56 km east from its starting position. Its starting point is 45 km east of its station. What is its final displa

cement relative to the station?
Physics
2 answers:
damaskus [11]4 years ago
7 0

Answer:

101km

Explanation:

If the train had started its journey starting from the station, its displacement would be 56km, but because the train began its journey 45km east from the station, what we must do is add the 56 km traveled to its initial position that is 45km (we can add them because both distances are on the same direction east):

d=45km+56km=101km

the final displacement relative to the station is 101km to the east.

Delicious77 [7]4 years ago
3 0
56+45= 101 km east of the station
You might be interested in
When launching a model cannon, students measure the height of the launch point to be 15 m and the horizontal distance the cannon
AVprozaik [17]

Answer:

ummmm

Explanation:

plzzz folllow and anwer my question plzzzz

3 0
4 years ago
The power that a student generates when walking at a steady pace of vw is the same as when the student is riding a bike at vb =
Nadya [2.5K]

Answer:

1/9

Explanation:

Sorry, I don't know if this is right, but here is what I did. We are ignoring potential energy because we assume that the student is walking and biking on level ground. Power = W/T, W = Mechanical Energy, or just Kinetic for this case. So P_{w}=\frac{E_{w} }{T}, and P_{b} =\frac{E_{b} }{T}. Ew = \frac{1}{2} mv_{w}^{2}, and Eb =\frac{1}{2} m(3v_{w})^{2}. Put Ew over Eb. the 1/2's cancel, the m's cancel, and you are left with \frac{v_{w} ^{2} }{9v_{w}^{2} }. Finally, this simplifies after cutting out the vw^2's to 1/9.

6 0
3 years ago
19) A child on a sled starts from rest at the top of a 15.0° slope. If the trip to the bottom takes 15.2 s,
sveticcg [70]

Answer: 288.8 m

Explanation:

We have the following data:

t=15.2 s is the time it takes to the child to reach the bottom of the slope

V_{o}=0 is the initial velocity (the child started from rest)

\theta=15\° is the angle of the slope

d is the length of the slope

Now, the Force exerted on the sled along the ramp is:

F=ma (1)

Where m is the mass of the sled and a its acceleration

In addition, if we draw a free body diagram of this sled, the force along the ramp will be:

F=mg sin \theta (2)

Where g=9.8 m/s^{2} is the acceleration due gravity

Then:

ma=mg sin \theta (3)

Finding a:

a=g sin \theta (4)

a=9.8 m/s^{2} sin(15\°) (5)

a=2.5 m/s^{2} (6)

Now, we will use the following kinematic equations to find d:

V=V_{o}+at (7)

V^{2}=V_{o}^{2}+2ad (8)

Where V is the final velocity

Finding V from (7):

V=at=(2.5 m/s^{2})(15.2 s) (9)

V=38 m/s (10)

Substituting (10) in (8):

(38 m/s)^{2}=2(2.5 m/s^{2})d (11)

Finding d:

d=288.8 m

6 0
3 years ago
I WILL MARK BRAINLIEST
Bad White [126]

Answer:

well I mean it would depend on where u live for this question that's the only reason I am confused.. I'm pretty sure it's A thi

8 0
3 years ago
Read 2 more answers
Which is the last step in conduction a Urlacher search
aleksandr82 [10.1K]
Try the same search on a different data base.
5 0
3 years ago
Other questions:
  • A hypothetical Planet X of mass 7.5 ✕ 1023 kg rotates on its axis once every 5 days. Hint (a) Find the distance from the center
    6·1 answer
  • A Rac variant, in which the residue at position 61 was replaced with an alanine (Rac61A), was synthesized. Wild-type Rac and Rac
    12·1 answer
  • When landing after a spectacular somersault, a 35.0 kg gymnast decelerates by pushing straight down on the mat. calculate the fo
    15·1 answer
  • If you could find the coldest object on Earth, you would find that it _________.
    14·2 answers
  • When an unbalanced force acts on an object, the
    5·1 answer
  • 17.a car is traveling at a constant velocity of 60 km/h for 4 hours means
    6·1 answer
  • A car is brought to rest in a distance of 484 m using a
    15·1 answer
  • What device is similar to a sandwich that has layers of semiconductors
    10·1 answer
  • The magnetic field strength in an experiment is 5.0 x 10–4 Newtons per Amp meter (or 5.0 x 10–4 N A–1m–1), where the uni
    10·1 answer
  • A 1200 kg car traveling east at 4.5 m/s crashes into the side of a 2100 kg truck that is not moving. During the collision, the v
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!