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)
Question: What is the resultant vector when multiplying by ?
+
What is the y-intercept of the cubic function y = x^3?
+
Question: What is the standard deviation of the data set {2, 4, 6, 8, 10}?
+
New questions in Mathematics
A=m/2-t isolate t
-442/c+5=26 what is c?
If L (-2, -5) reflected across y = -4. What are the coordinates of L?
132133333-33
The data set (75, 85, 58, 72, 70, 75) is a random sample from the normal distribution No(µ, σ). Determine a 95% two-sided confidence interval for the mean µ .
Director of reservations believes that 9% of the ticketed passengers are no-shows. If the directors right what is the probability that the proportion of no-shows in a sample of 789 ticketed passengers with differ from the population proportion buy more than 3% round your answer to four decimal places.
Suppose a large shipment of cell phones contain 21% defective. If the sample of size 204 is selected, what is the probability that the sample proportion will differ from the population proportion by less than 4% round your answer to four decimal places
2x-4y=-6; -4y+4y=-8
Raúl, Gilberto and Arturo are playing golf; The probabilities of winning for each one are as follows: (Raúl wins) = 20% (Gilberto wins) = 0.05% (Arturo wins) = ¾%. Perform operations and order events from least to most probable.
7=-4/3y -1
Use the sample data and confidence level given below to complete parts​ (a) through​ (d). A drug is used to help prevent blood clots in certain patients. In clinical​ trials, among 4336 patients treated with the​ drug, 194 developed the adverse reaction of nausea. Construct a ​99% confidence interval for the proportion of adverse reactions.
TEST 123123+1236ttttt
4+168×10³×d1+36×10³×d2=-12 -10+36×10³×d1+72×10³×d2=0
Determine the increase of the function y=4x−5 when the argument changes from x1=2 to x2=3
Solve equations by equalization method X-8=-2y 2x+y=7
Determine a general formula​ (or formulas) for the solution to the following equation.​ Then, determine the specific solutions​ (if any) on the interval [0,2π). cos30=0
A hardware bill totals $857.63 with discounts of 5% and 3%. What is the net cost of the Material ?
Two particles of electrical charges Q1=3.8×10-⁶C and q,=4.4×10-⁶C are separated in vacuum by a distance of 4.0.10-⁸ m. Since K=9.0.10⁹ N.m²/C², the intensity of the interaction force between them, in newtons, is?
What is the total amount due and the amount of interest on a 3-year loan of $1,000 at a simple interest rate of 12% per year?
Solve the following 9x - 9 - 6x = 5 + 8x - 9