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
Sladkaya [172]
2 years ago
5

Five race cars speed toward the finish line at the Jasper County Speedway. The table lists each car’s speed in meters/second. If

each car has the same mass, which car will require the longest time to come to a full stop?
Car A Car B Car C Car D Car E
890 m/s 850 m/s 790 m/s 895 m/s 870 m/s
Physics
2 answers:
Anarel [89]2 years ago
7 0
I think the answer would be Car C.
igor_vitrenko [27]2 years ago
6 0

Answer:

CAR D

Explanation:

As we know that all cars have same mass so the deceleration of the car that will reduce its speed to rest is given as

a = \frac{F}{m}

so it will be same for all cars.

Now we know by kinematics as

v_f - v_i = at

so time taken by it to stop is given as

t = \frac{v_f - v_i}{a}

here since final speed of all cars is zero so we can say that more initial speed of car will take more time to stop the car.

So longest time will take by Car D

You might be interested in
A ball is thrown vertically upward. As it rises, what happens to its total energy?.
diamong [38]

The total energy of a ball stays constant as it is thrown upward because potential energy increases while kinetic energy decreases. When the ball reaches its maximum height, the velocity is zero. Therefore, only potential energy exists rather than kinetic energy.

The thrower's movement imparts kinetic energy to a ball thrown vertically. The maximum height that can be achieved after leaving the hand will depend on the actual velocity. Air resistance causes some of this energy to be lost to the air as frictional dissipation, which warms the air in the area as well as the ball's surface.

We can just talk about how the ball moves when it is in the gravitational field of the Earth if we ignore this for the purposes of this discussion. The ball's total energy as it is released is comprised of both its gravitational potential energy and its kinetic energy, which result from the ball's velocity (due to its position).

The gravitational potential energy begins to rise as the ball moves vertically upward at precisely the same pace as it loses kinetic energy. The ball experiences a steady downward acceleration of 9.81 m/s2, which causes it to initially decline until it briefly comes to a stop at its highest point.

Due to its current position in the Earth's gravitational field relative to its initial position, all of the energy at this point is gravitational potential energy. As the ball experiences constant downward acceleration, its motion immediately becomes apparent in that direction because the acceleration easily transforms gravitational potential energy back into kinetic energy.

As a result, at every point along the trajectory, the total of these interchangeable forms of energy remains constant.

To learn more about what happens when a ball is thrown vertically upward:

brainly.com/question/1121850

3 0
8 months ago
A scientist prepares a colloidal solution and pours it into a glass tank. She then flashes a beam of white light into one end of
irina [24]
Light is consist of different spectrum of colors called wave lengths. The colors that visible to the naked eye are known as Red, Orange, Yellow, Green, Blue, Indigo, and Violet. These colors are arranged from shortest to longest. The color red that appeared from the other side of the tank signifies that the wavelength that can only pass through the material is red, which is the shortest. Other wavelengths are dispersed into the molecules of the glass, hence it cannot be seen through the other side.
4 0
2 years ago
Read 2 more answers
How much heat is released when 35kg of water freezes?
inn [45]
You need an additional point of data here: the enthalpy of fusion, or conversely the enthalpy of melting (they differ only by their sign). For water (or ice) that value is gotten from sources such as the internet

<span>ΔH°(fus) = 6.01 kJ/mole </span>

<span>Since you have 35 000g, how many moles do you have? </span>
<span>Moles H2O = 35000 g/(18.015 g/mole) = 1942.8 moles</span>

<span>So, take that ΔH°(fus) in kJ/mole, multiply by the number of moles, and there ya go! 
</span>
6.01 x 1942.8 = 11,676 kJ of energy is released

Hope I helped!! xx
3 0
2 years ago
According to Coulomb’s Law, the force between two charged objects is related to _____.
Natasha_Volkova [10]

Answer:

A.) the inverse of the square of the distance separating them

Explanation:

Coulombs law states that "the force of attraction between two charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them."

Mathematically, F = kq1q2/r²

Where q1 and q2 are the charges

r is the distance between the charges.

According to the law, the force between two charged objects is related to the inverse of the square of the distance separating them.

5 0
3 years ago
Is cell using oxygen to break down sugar a physical or chemical change
Viefleur [7K]
Breaking down sugar (glucose) is a chemical change. Sugar is a compound that can be broken down.
5 0
2 years ago
Read 2 more answers
Other questions:
  • A strip of copper metal is placed in an aqueous sodium chloride solution. According to the standard reduction potential below, w
    10·1 answer
  • When divided by △t, (vf - vi) is used to determine which characteristic? A.Speed B.Direction C. Displacement D.Acceleration
    10·1 answer
  • Ohm's law relates the current, voltage, and resistance in a circuit. Use Ohm's law to determine what will happen to the remainin
    9·2 answers
  • Josh rolled a bowling ball down a lane in 2.5 seconds. The ball travelled at a constant acceleration of 1.8 m/s/s down the lane
    6·1 answer
  • What does the law of conservation of mass state?
    8·2 answers
  • - 4x4 – 13x3 + 8x2 – 21x + 18 is divided by 2 – 3?
    13·2 answers
  • Which of the following statements is true of sound transmission through various mediums? ​
    14·2 answers
  • How does energy affect a wave​
    6·1 answer
  • A transparent oil with index of refraction 1.15 spills on the surface of water (index of refraction 1.33), producing a maximum o
    10·1 answer
  • write at least 5 sentences answering the question, "How does the height of a ramp affect the speed of an object rolling down tha
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!