Question

A. Consider a race of n cars that leave the same place and with constant speeds, but different from each other. If at a given moment the distance between each car and the one in front of it everyone has the same distance, at what other point in the race will this happen? Justify your answer. B. What is the value of the ratio between the speed of the fastest in relation to that of the slowest?

89

likes
443 views

Answer to a math question A. Consider a race of n cars that leave the same place and with constant speeds, but different from each other. If at a given moment the distance between each car and the one in front of it everyone has the same distance, at what other point in the race will this happen? Justify your answer. B. What is the value of the ratio between the speed of the fastest in relation to that of the slowest?

Expert avatar
Hank
4.8
106 Answers
**A.** Vamos considerar que no momento inicial, a distância entre cada carro e o da frente dele é a mesma. Isso significa que a diferença de distância percorrida por cada carro também é a mesma.

Se a velocidade do carro mais rápido é v_1, a do segundo carro é v_2, e assim por diante até a velocidade do carro mais lento v_n, a distância percorrida por cada um deles será igual em um certo momento.

Se após um tempo t a distância entre eles for a mesma novamente, isso significa que a diferença de distância percorrida por cada carro continua a mesma. Portanto, no novo momento em que isso acontecer, cada carro terá percorrido uma distância maior, mas a relação de distância entre eles será a mesma.

**Resposta:** Em outro momento da corrida em que a distância entre cada carro e o da frente dele seja a mesma, será quando esta relação de distância percorrida por cada um se mantiver constante.

**B.** A relação entre a velocidade do carro mais rápido e a do mais lento pode ser encontrada pela razão entre suas velocidades.

Se a velocidade do carro mais rápido é v_1 e a do mais lento é v_n, então a relação será:

\frac{v_1}{v_n}

**Resposta:** A relação entre a velocidade do carro mais rápido em relação à do mais lento é \frac{v_1}{v_n}.

Frequently asked questions (FAQs)
What is the value of sin(
+
What is the radian measure of an angle in a circle that subtends an arc with a length equal to half the circumference of the circle?
+
What is the area of a square with side length 10?
+
New questions in Mathematics
calculate the derivative by the limit definition: f(x) = 6x^3 + 2
Y=-x^2-8x-15 X=-7
What is the coefficient of elasticity of the material that must be placed on the heel of the 10 cm high clog, with a base area of 2 cm² so that it deforms only 2 cm when the force on it will be a maximum of 600 N.
3(2+x)-2(2x+6)=20-4x
Karina has a plot of 5000 square meters in which she has decided that 60% of it will be used to plant vegetables. Of this part, 12% will be dedicated to planting lettuce. How much surface area of the plot will be used to grow lettuce?
How many kilometers does a person travel in 45 minutes if they move at a rate of 8.3 m/s?
If L (-2, -5) reflected across y = -4. What are the coordinates of L?
Determine the equations of the recipes that pass through the following pairs of points P1 (2;-1) and p2 (4;-1)
Derivative of x squared
Suppose X has a Poisson distribution, with a mean of 0.4. Determine the probability that x is at most 2.
Which of the following is the product of multiplying twenty-seven and twenty-five hundredths by nine and twenty-seven hundredths?
Suppose 56% of politicians are lawyers if a random sample of size 564 is selected, what is the probability that the proportion of politicians who are lawyers will differ from the total politicians proportions buy more than 4% round your answer to four decimal places
224 × (6÷8)
The sum of two numbers is equal to 58 and the largest exceeds by at least 12. Find the two numbers
A company that manufactures personal hygiene items purchases machinery for $220,000 that is considered to last 7 years; it is estimated that at the end of the period it will have a salvage value of $1000. Find: to. The depreciation rate. b. The book value at the end of the sixth year.
If f(x,y)=6xy^2+3y^3 find (∫3,-2) f(x,y)dx.
What’s the slope of a tangent line at x=1 for f(x)=x2. We can find the slopes of a sequence of secant lines that get closer and closer to the tangent line. What we are working towards is the process of finding a “limit” which is a foundational topic of calculus.
A circular window has a rubber molding around the edge. If the window has a radius of 250 mm, how long is the piece of molding that is required ? (To the nearest mm)
nI Exercises 65-68, the latitudes of a pair of cities are given. Assume that one city si directly south of the other and that the earth is a perfect sphere of radius 4000 miles. Use the arc length formula in terms of degrees to find the distance between the two cities. 65. The North Pole: latitude 90° north Springfield, Illinois: latitude 40° north
7- A printing company found in its investigations that there were an average of 6 errors in 150-page prints. Based on this information, what is the probability of there being 48 errors in a 1200-page job?