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
bazaltina [42]
4 years ago
14

until a train is a safe distance from the station, it must travel at 5 m/s. once the train is on open track, it can speed up to

45m/s. if it takes 8 seconds to reach 4 m/s, what is the acceleration of the train?
Physics
1 answer:
MatroZZZ [7]4 years ago
4 0

Answer:

5 meters per second squared

Explanation:

We calculate the acceleration using the formula:

a = (vf - vi) / t

where "vf" is the final velocity, "vi" the initial velocity, and "t" the time it took to change from the initial velocity to the final one.

In our case:

a = (45 - 5) / 8 = 40 / 8 = 5 m/s^2

You might be interested in
A flat coil of wire has an area A, N turns, and a resistance R. It is situated in a magnetic field, such that the normal to the
SOVA2 [1]

Answer:

Johnny created an electromagnet out of a solenoid (a coil of wires with 20 loops), an iron core (of 1 nail), and a single 9 V battery. When Johnny does this, he creates a small magnetic field that allows him to pick up 2 paper clips. Using a CER format, explain to Johnny three things he could change that would increase the strength of his magnetic field and why each change increases the magnetic field. You may want to write three paragraphs to make this easier for the reader to understand

5 0
3 years ago
1. A rocket is fired vertically from the launch pad with a
zavuch27 [327]

Answer:

Max height= 36000 meters

Total Time = 120 seconds

Explanation:

0 = U - at

U = at

U= 20*60

U= 1200 m/s

MAX altitude would be

(U²Sin²tita)/2g

Max height= 1200² *( SIN90)²/(2*20)

Time of FLIGHT

2 * 1200/20

2400/20

120 sec onds

7 0
3 years ago
Describe how the properties of sound waves change as they spread out in a spherical pattern.
guapka [62]
They go up and down
4 0
3 years ago
The similarity between thermal energy, heat and temperature?
Vitek1552 [10]
Heat energy and thermal energy are the same because heat energy is thermal energy. Also thermal energy and temperature are the same because temperature is measuring heat in degrees Celsius or degrees Fahrenheit. Hope this helps!
6 0
3 years ago
What happens if you are riding your bike and hit something (like a curb) with the front wheel
evablogger [386]
You would flip forward or to the side
6 0
3 years ago
Other questions:
  • A(n) 60.3 g ball is dropped from a height of 53.7 cm above a spring of negligible mass. The ball compresses the spring to a maxi
    11·1 answer
  • Help please!!!
    5·1 answer
  • A 55-liter tank is full and contains 40kg of fuel. Find using Sl units: • Density p. • Specific Weight y • Specific Gravity Answ
    12·1 answer
  • What is the change in temperature for the aluminum wire?
    7·2 answers
  • Charles' Law
    15·1 answer
  • The maximum tension that a 0.80 m string can tolerate is 15 N. A 0.35-kg ball attached to this string is being whirled in a vert
    9·1 answer
  • Please help!!! give me a summary on why human population is either good or bad!! thank youu
    13·1 answer
  • How do unicellular organisms reproduce?
    10·1 answer
  • PLEASE HELP ME WHATS THE ASNWRR
    8·2 answers
  • Gamma rays can cause cancer, but they can also be used to treat cancer. How
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!