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
scZoUnD [109]
3 years ago
13

Determine the kinetic energy of a 1000-kg roller coaster car that is moving with a speed of 20.0 m/s.

Physics
1 answer:
ankoles [38]3 years ago
7 0

Answer:

The correct answer is - 200000 J

Explanation:

We use the formula of kinetic energy:

The formula to calculate kinetic energy is,

Here,

Ec =1/2 x  m x v^2

The mass of the roller coaster is,  m  =  1000  k g

The speed of the roller coaster is, v = 20.0 m/s

 Therefore,

Ec=1/2 x 1000kg x (20m/s)^2 = 200.000Joule

200,000J

You might be interested in
In which situation are both the speed and velocity of the car changing?
lubasha [3.4K]
Answer is A because the speed and velocity would change. Think of it as GTA, your going 30+ miles per hour and you take a left turn, the speed and velocity would change in an instant.. 
Hope this helped.
6 0
3 years ago
Read 2 more answers
Which of the following statement(s) is
alexgriva [62]

Answer:

Explanation:

A rectifier is an electrical device that converts alternating current (AC) to direct current (DC), a process known as rectification. Rectifiers have many uses including as components of power supplies and as amplitude modulation detectors (envelope detectors) of radio signals. Rectifiers are most commonly made using solid state diodes but other type of components can be used when very high voltages or currents are involved. When only a single diode is used to rectify AC (by blocking the negative or positive portion of the waveform), the difference between the term diode and the term rectifier is simply one of usage. The term rectifier describes a diode that is being used to convert AC to DC. Most rectifier circuits contain a number of diodes in a specific arrangement to more efficiently convert AC power to DC power than is possible with only a single diode.

5 0
3 years ago
Where did we use rotational and irrotational flow​
WARRIOR [948]

Answer:

The term rotational and irrotational flow is associated withe the flow of particles in fluid.

The common example of irrrotational flow can be seen on the carriages of the Ferris wheel (giant wheel).

Explanation:

  • If the fluid is rotating along its axis with the streamline flow of its particles,then this type of flow is rotational flow.
  • Similarly if fluid particles do not rotate along its axis while flowing in a stream line flow then it is considered as the irrotational flow.
  • In majority, if the flow of fluid is viscid then it is rotational.
  • Fluid in a rotating cylinder is an example of rotating flow.
3 0
3 years ago
If in 30 mins Alex runs to a store that is 4 km away, what is her average speed in km/h
masha68 [24]
15 km 30 divided by 4 is 7.5 km in 30 min times that by 2 the answer is 15
6 0
4 years ago
Which letter represents a wavelet
Blizzard [7]
A/c/d. that is the anser hope it helps
6 0
4 years ago
Read 2 more answers
Other questions:
  • Which is true about inelastic collisions: a. An inelastic collision does not obey conservation of energy. b. An inelastic collis
    8·1 answer
  • What's the total mechanical energy of a 300 kg satellite in circular orbit 1500 km above earth's surface?
    13·1 answer
  • Is loudness affected by change in frequency? Explain<br><br><br> I will mark you the brainliest
    11·1 answer
  • A liquid in a given capillary tube always rises up to a fixed height but not infinitely why
    9·1 answer
  • Need help on this one please
    5·1 answer
  • An electric current is created in a long thin wire. How will increasing the current and changing the direction of the current ef
    14·2 answers
  • In which region of the electromagnetic spectrum is this radiation found?
    9·1 answer
  • Find the conductivity of a conduit with a cross-sectional area of 0.60 cm2 and a length of 15 cm, given that its conductance G i
    15·1 answer
  • Which choice has more thermal energy?
    14·1 answer
  • Shrinking Loop. A circular loop of flexible iron wire has an initial circumference of 167 cm , but its circumference is decreasi
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!