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
lorasvet [3.4K]
2 years ago
15

A moving car initially has kinetic energy K. The car then moves in the opposite direction with four times its initial speed. Wha

t is the kinetic energy now
Physics
1 answer:
Liula [17]2 years ago
6 0

If initial speed was v, Kinetic energy was K = 1/2mv^2

When speed will be 4v, KE will be:

= 1/2 m (4v)^2

=1/2m 16 v^2

=16K

Now kinetic energy will become <em>1</em><em>6</em><em> </em><em>times</em><em> </em><em>of</em><em> </em><em>initial</em><em> </em><em>Kinetic</em><em> </em><em>Energy</em>

You might be interested in
Chemical substances in food that have specific functions in your body are called?
andreev551 [17]

Answer:

Chemical substances in food that have specific functions in your body are called Nutrients. Examples: proteins, fats, carbohydrates, vitamins, and minerals

Explanation:

These chemical substances keep our body healthy.

These chemical substances prevent the premature aging.

They help our body to fight against diseases.

They build the new tissues and cells for growth.

And in short, they help in the growth, development of our body.

4 0
3 years ago
What happens to the rock structure during each of type of change?
EastWind [94]
Previous rocks melt and collide and to form igneous rocks.
Igneous rocks disintegrate due to weather disruptions and get carried away by water, where they form sedimentary rock strata by lithification.
Igneous and sedimentary change by heat and pressure to form metamorphic rocks.
Metamorphic rocks melt and become igneous rocks.
3 0
3 years ago
What is the metric unit of measuring the volume of liquids?
-Dominant- [34]
Litres or millilitres
6 0
3 years ago
Winds blowing toward the east are called easterlies.<br><br><br> True or False
eimsori [14]

Answer: False

Explanation:

Winds are named for the cardinal direction they blow from.  Hence, a wind that <em>"blows towards the east"</em>, logically should <u>come from the west </u>and is called a <em>"west wind"</em>.

In thise sense, one of the best examples of this type of wind are the <em>Westerlies</em>, which are are prevailing winds that blow from the west at midlatitudes and have the characteristic that are stronger during winter and weaker during summer.

Therefore, the statement is false.

6 0
2 years ago
The energy stored per unit volume of the inductor is called the energy density of the magnetic field. Why?
Marrrta [24]

Answer:

yes because physics want that

7 0
2 years ago
Other questions:
  • What is the chemical property of a burger?
    9·1 answer
  • How much kinetic energy does a baseball with a mass of 0.143 kg have it it is traveling at a velocity of 41.1 m/s?
    8·1 answer
  • What are the types of energies released when a candle burns?
    15·2 answers
  • An ideal photo-diode of unit quantum efficiency, at room temperature, is illuminated with 8 mW of radiation at 0.65 µm wavelengt
    11·1 answer
  • Which of the following best describes a substance in which the temperature remains constant while at the same time it is experie
    6·1 answer
  • The early workers in spectroscopy (Fraunhofer with the solar spectrum, Bunsen and Kirchhoff with laboratory spectra) discovered
    7·1 answer
  • When would the displacement technique of measuring need to be employed?
    7·1 answer
  • Read the following scenario.
    7·2 answers
  • An influence that can deform a flexible abject or change the motion of an object with mass.​
    5·1 answer
  • A 4 kg block is pulled with 4.1 N of force to the right. The block experiences 1.0 N of
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!