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
Elodia [21]
2 years ago
9

Find the velocity and distance travelled of a car that is accelerating at 3 m/s2 for 4 seconds.

Physics
1 answer:
marta [7]2 years ago
6 0

Explanation:

Given:

v₀ = 0 m/s

a = 3 m/s²

t = 4 s

Find: Δx and v

Δx = v₀ t + ½ at²

Δx = (0 m/s) (4 s) + ½ (3 m/s²) (4 s)²

Δx = 24 m

v = at + v₀

v = (3 m/s²) (4 s) + 0 m/s

v = 12 m/s

You might be interested in
Increasing which of the following would increase the magnetic force between the permanent magnet and the coil? A. Transformer B.
Gnoma [55]

For this one, all you really need to do is eliminate any answers
that are absurd or meaningless.

You can't increase a transformer.
You can't increase a circuit.
You can't increase a generator.

When the <em><u>current</u></em> through a coil of wire increases, the magnetic field
around the coil increases, so there would be more magnetic force
between the coil and a permanent magnet.


7 0
3 years ago
Based on the law of conservation of energy, how can we reasonably improve a machine’s ability to do work?
MrMuchimi

D. Redefine the machine’s system boundaries.

The Law of Conservation of Energy states that energy can't be created not destroyed. Energy, however, can be changed from one form to another. The law applies to isolated systems only. By redefining and expanding the system (including all factors affecting it) , the machine's ability to do work should improve.

7 0
3 years ago
Read 2 more answers
Two competing models attempt to explain the motions and changing brightness of the planets: Ptolemy's geocentric model and Coper
AlekseyPX

Answer:

A. Geocentric: This model is Earth Centered . Retrograde motion is explained by epicycles .

B. Heliocentric: This model is Sun centered.  Retrograde motion is explained by the orbital speeds of planets

C. Both geocentric and heliocentric: Epicycles and deferents help explain planetary motion . Planets move in circular orbits and with uniform motion . The brightness of a planet increases when the planet is closest to Earth.

Explanation:

The principle of the Ptolemy's geocentric model was developed on the assumption that the center of the universe is the Earth. On the other hand, the principle of the Copernicus' heliocentric model was based on the assumption that the center of the universe is the sun. However, both models have a common ideology on uniform circular motion and epicycles.

6 0
3 years ago
Lee pushes horizontally with a force of 75 n on a 36 kg mass for 10 m across a floor. calculate the amount of work lee did. answ
svlad2 [7]
To find work, you use the equation: W = Force X Distance X Cos (0 degrees)
Following the Law of Conservation of Energy, energy cannot be destroyed nor created.

So you would do 75 N x 10m x Cos (0 degrees)= 750 J
8 0
3 years ago
Read 2 more answers
Describe what a hydrogen bond is. 6th grade answer
r-ruslan [8.4K]

Answer:

<em>Hydrogen bond is the attractive force between the hydrogen attached electronegative atom </em>

Explanation:

8 0
3 years ago
Other questions:
  • What's the melting point of aluminum
    13·1 answer
  • More massive objects have a large gravitational force or weight. Why do heavier objects accelerate to the ground at the same rat
    10·2 answers
  • Displacement can be zero but distance can't. explain this statement with example.​
    8·1 answer
  • Air at 38oC and 97% relative humidity is to be cooled to 14oC and fed into a plant area at a rate of 510 m3/min. Calculate the r
    6·1 answer
  • A rocket is continuously firing its engines as it accelerates away from Earth. For the first kilometer of its ascent, the mass o
    5·1 answer
  • A hobby rocket reaches a height of 72.3 meters and lands 111 meters from the launch point
    14·1 answer
  • Balance the following equation: _____ Fe + _____Br2 -----&gt; _____ FeBr3
    14·1 answer
  • Imagine that you drop a shot put from a tower on the moon. How much
    12·1 answer
  • For for each situation say how the ideas of force pressure and area can be applied :
    8·1 answer
  • Please solve the Problem.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!