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
Tomtit [17]
3 years ago
5

A train moving at a constant speed of 50.0 km/h moves east for 45.0 min, then in a direction 45.0° east of due north for 10.0 mi

n, and then west for 55.0 min. What is the average velocity of the train during this run? (Let the +x-axis point towards the east and the +y-axis point towards the north.)l

Physics
1 answer:
Yuki888 [10]3 years ago
8 0

Answer:

3.47km/h with a direction of 67.8 degrees north of west.

Explanation:

First we need to calculate the displacement on the X axis, so:

d_{x1}=50.0km/h*45min(\frac{1h}{60min})=37.5km\\d_{x2}=50.0km/h*10min(\frac{1h}{60min})*cos(45^o)=5.90km\\d_{x1}=-50.0km/h*55.0min(\frac{1h}{60min})=45.8km\\D_x=37.5+5.90-45.8=-2.4km

then on the Y axis:

D_y=50.0km/h*10min(\frac{1h}{60min})*sin(45^o)=5.90km

The magnitud of the displacement is given by:

D=\sqrt{D_x^2+D_y^2} \\D=6.37km

and the angle:

\alpha =arctg(\frac{5.90}{2.41})=67.8^o

that is 67.8 degrees north of west.

v=\frac{D}{t}\\v=\frac{6.37km}{110min*\frac{1h}{60min}}\\v=3.47km/h

You might be interested in
What are two things that turbines have been used for?
posledela
2 thing it is used for are commonly like wind turbines and water turbines.
5 0
3 years ago
Read 2 more answers
O que é fisiológicos na areia medica
Makovka662 [10]
??????????????????????????
7 0
2 years ago
As the mass of an object increases, it’s inertia will
Scrat [10]

Answer:

Inertia is the property of mass that resists change. Therefore, it is safe to say that as the mass of an object increases so does its inertia.

Explanation:

7 0
2 years ago
Read 2 more answers
You are watching an object that is moving in shm. when the object is displaced 0.600 m to the right of its equilibrium position,
larisa [96]
It should take at least 4.50

8 0
3 years ago
What is the average velocity of a car that travels 30 kilometers due wet in 0.50
rodikova [14]

Answer:

60km/hr west

Explanation:

When you are dealing with velocity you always name the direction its going in

3 0
3 years ago
Other questions:
  • The name for metric unit of distance
    5·1 answer
  • The most expensive benefit is usually ______. a. life insurance b. retirement c. health care d. day care
    13·2 answers
  • An arrow is launched upward with an initial speed of 100 meters per second (m/s). The equations above describe the constant-acce
    9·1 answer
  • a man exerts 3000.00N of force to push a car 35.00 meters in 90.00 seconds.... 1. what is the work done 2.what is the power gene
    7·1 answer
  • The major horizontal surface on an airplane that provides lift.​
    5·1 answer
  • What factor account for the change of viscosity in fluid
    6·1 answer
  • In a 100 mm diameter horizontal pipe, a venturimeter of 0.5 contraction ratio has been fitted. The head of water on the meter wh
    12·1 answer
  • What would a bullet fired from a very long distance, such as 1000 yards from the target do as it travelled along a straight path
    6·1 answer
  • A ball is thrown upwards from the ground. The ball reaches its maximum height after 3.3 s. What is the initial velocity of the b
    7·1 answer
  • Which would be a good analogy of wave motion
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!