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 probability of flipping a fair coin and rolling a standard die and getting a heads and an even number?
+
What is the product of 3 and the mixed number 2 1/4, when factoring in real numbers?
+
Math question: How many different ways can we arrange the letters in the word "MATHEMATICS" using all the letters?
+
New questions in Mathematics
12-6x=4x+2
String x = 5 Int y=2 System.out.println(x+y)
I) Find the directional derivative of 𝑓(𝑥, 𝑦) = 𝑥 sin 𝑦 at (1,0) in the direction of the unit vector that make an angle of 𝜋/4 with positive 𝑥-axis.
If L = (-2, -5) is reflected across y= -4 , what are the coordinates of L?
3x+5y=11 2x-3y=1
Derivative of x squared
7/6-(-1/9)
Mrs. Emily saved RM10000 in a bank. At the end of the eighth year, the amount of money accumulated amounted to RM19992.71. If the bank pays an annual interest of x% for a year compounded every 6 months. Calculate the value of x.
logy/logx + logz/logy + logt/logz = 8x².t x=?
Determine the reduced equation of the straight line that is perpendicular to the straight line r: y=4x-10 and passes through the origin of the Cartesian plane
7. Find the equation of the line passing through the points (−4,−2) 𝑎𝑛𝑑 (3,6), give the equation in the form 𝑎𝑥+𝑏𝑦+𝑐=0, where 𝑎,𝑏,𝑐 are whole numbers and 𝑎>0.
The physician orders 15mg of tramadol(liquid). On hand is 30mg/2mL vials. How many mL will the MA administer?
Is -11/8 greater than or less than -1.37?
Let A, B, C and D be sets such that | A| = |C| and |B| = |D|. Prove that |A × B| = |C × D|
Two minus log 3X equals log (X over 12)
A property sold for $745,000 in a co-brokered transaction. The seller has agreed to pay a 7% commission to the listing firm. The listing firm has agreed to equally split the commission with the selling firm. If the buyer’s broker will receive 8% of the selling firm’s commission, how much commission will the buyer’s broker receive? $14,900 $3725 $$37250 $18625
A factory produces glass for windows. The thickness X of an arbitrarily selected pane of glass is assumed to be Normally distributed with expectation μ = 4.10 and standard deviation σ = 0.04. Expectation and Standard deviation is measured in millimeters. What is the probability that an arbitrary route has a thickness less than 4.00 mm?
Let G be the center of gravity of triangle ABC. We draw through A a parallel to BC on which we take a point D so that DG⊥BG. If the area of the quadrilateral AGBD is equal to s, show that AC·BD≥2·s.
Write the inequality in the form of a<x<b. |x| < c^2
A group of 17 people spent 9 days on vacation and spent R$776.34 on barbecue meat and the bill needs to be divided as follows: 6 people stayed for 9 days, 7 people stayed for 4 days, and 2 people stayed for 5 days and 2 people stayed 3 days, how much does each group have to pay for the days they stayed?