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MatroZZZ [7]
2 years ago
11

A train starts from rest and accelerates uniformly until it has traveled 5.6 km and acquired a velocity of 42 m/s. What is the a

pproximate acceleration of the train during this time?
Mathematics
1 answer:
shepuryov [24]2 years ago
4 0

Answer:

0.16 m/s²

Step-by-step explanation:

Given:

Δx = 5600 m

v₀ = 0 m/s

v = 42 m/s

Find: a

v² = v₀² + 2aΔx

(42 m/s)² = (0 m/s)² + 2a (5600 m)

a = 0.16 m/s²

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Dafna1 [17]
2.40714

1) Let's evaluate that expression, given that a=4.9, b=-7, and c=-0.5

\begin{gathered} a^3\div b^2+c^3 \\ (4.9)^3\div(-7)^2+(-0.5)^3= \\ \frac{4.9^3}{\left(-7\right)^2+\left(-0.5\right)^3} \\  \\ \frac{4.9^3}{48.875} \\  \\ \frac{117.649}{48.875} \\  \\ 2.40714 \end{gathered}

Note that we have rewritten it as a fraction so that we can easily operate. Also, we have applied here the PEMDAS order of operations, prioritizing the exponents.

6 0
1 year ago
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Jobisdone [24]

Answer:

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Step-by-step explanation:

5/18 + (-1/6)

-1/6=-3/18

5/18+(-3/18)=

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3 0
3 years ago
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LuckyWell [14K]
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11(8) = 88

The correct answer is B. 88 m^2
6 0
3 years ago
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Olivia’s age plus twice John’s age is 30. Three times Olivia’s age plus 8 times John’s age is 108. How old are Olivia and John?
andrezito [222]

Answer:

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Step-by-step explanation:

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2 years ago
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