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
mina [271]
3 years ago
11

A train is travelling at 15m/s. It accelerates at 3m/s² for 20 seconds. How far does the train travel in this time?

Physics
1 answer:
Fittoniya [83]3 years ago
4 0

Answer:

Explanation:

The answer is 900m

You might be interested in
Part complete How long must a simple pendulum be if it is to make exactly one swing per five seconds?
shtirl [24]

Answer:

L=6.21m

Explanation:

For the simple pendulum problem we need to remember that:

\frac{d^{2}\theta}{dt^{2}}+\frac{g}{L}sin(\theta)=0,

where \theta is the angular position, t is time, g is the gravity, and L is the length of the pendulum. We also need to remember that there is a relationship between the angular frequency and the length of the pendulum:

\omega^{2}=\frac{g}{L},

where \omega is the angular frequency.

There is also an equation that relates the oscillation period and the angular frequeny:

\omega=\frac{2\pi}{T},

where T is the oscillation period. Now, we can easily solve for L:

(\frac{2\pi}{T})^{2}=\frac{g}{L}\\\\L=g(\frac{T}{2\pi})^{2}\\\\L=9.8(\frac{5}{2\pi})^{2}\\\\L=6.21m

3 0
3 years ago
When a firecracker explodes, what types of energy does it give off?
fomenos
The answer is c. 
Sound, light and heat energy.

Hope this helped :)
7 0
3 years ago
Some chlorine atoms have an atomic mass of 37, while others have an
lara [203]

Answer: D

Explanation: :) Just took the quizz

8 0
2 years ago
Read 2 more answers
Three cars with identical engines and tires start from rest, and accelerate at their maximum rate. Car X is the most massive, an
aksik [14]

Answer:C) car X

Explanation:

Given

All the cars have identical Engine thus Force Produced by car X will be equal to  Y and Z

and Force=mass\times acceleration

Since Car X is most massive so acceleration associated with it will be minimum

acceleration of car X is minimum thus it will travel farthest  

6 0
3 years ago
These are nontoxic, nonflammable chemicals containing atoms of carbon, chlorine, and fluorine that have created a hole in the oz
Grace [21]
<span>The correct answer is: Chlorofluorocarbons (CFCs)

Explanation:
In simple words, CFCs are the chemical compounds made up of the following three elements:
1. Carbon
2. Chlorine
3. Fluorine

When CFCs compounds reach the upper atmosphere, the ultraviolet rays coming from the Sun break those compounds into individual elements, which then react with one of the oxygen atom of the ozone (O3) to form new compounds like chlorine monoxides. That way the ozone molecules get destroyed, resulting into the ozone depletion. Hence, the correct answer is Chlorofluorocarbons (CFCs).</span>
6 0
3 years ago
Read 2 more answers
Other questions:
  • A crying baby emits sound with an intensity of 8.0 × 10-8 w/m2. calculate a reasonable estimate for the intensity level from a s
    10·2 answers
  • What is work done in physics and how can it be calculated
    14·2 answers
  • When we draw a diagram of the forces acting on an extended object, the tail of the force vector for the weight should be at?
    6·1 answer
  • In order for two objects to have the same temperature, they must a. be in thermal equilibrium.
    12·1 answer
  • 1. The Moon's mass is 7.34 x 1022 kg, and it is 3.8 x 105 km away from Earth. Earth's
    15·1 answer
  • 3 write the three laws given by kepler.How did they help Newton to arrive at the inverse square law of gravity?​
    13·1 answer
  • When the displacement of a mass on a spring in simple harmonic motion is A/2 from the equilibrium position, what fraction of the
    5·1 answer
  • Which statement best describes the energy of activation?
    12·1 answer
  • Un chico de 45 kg de masa se encuentra de pie sobre la nieve. Calcula la presión sobre este:
    13·1 answer
  • You want to determine whether the mass of an object attached to a parachute affects the time it takes to fall to the ground. In
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!