2 years ago

25 points and brainiest if correct A, B, C, D

Engineering

2 answers:

svetlana [45]2 years ago

5 0

The answer is number 2 just took the test on edge.

hoa [83]2 years ago

3 0

Answer:

A. Juna's answer is correct because both the number of feet and the number of inches are correct

Explanation:

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The acceleration of a point is given. a = 20 t m/s2 When t=0, s = 50 m and v = -8 m/s. What are the position and velocity of the

lidiya [134]

Answer:

v=82 m/s

s=116m

Explanation:

a=20t

$\frac{\mathrm{d} v}{\mathrm{d} t}=20t\\\int\limits dv =\int(20t) dt\\v={10}t^2+c$

using condition given at t=0

$-8=10\times 0^2 +c$

c=-8

now equation becomes

v=10t²-8

v at t= 3s v=82 m/s

again

$\frac{\mathrm{d} s}{\mathrm{d} t}=10t^2-8$

$ds=(10t^2-8)dt\\\int\limits ds =\int(10t^2-8) dt\\s=\frac{10}{3} t^2-8t+b$

now using condition given s=50 at t=0

b=50

now equation becomes

$s=\frac{10}{3}t^3-8t+50$

calculating s at t=3s

s=116m

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AlladinOne [14]

Explanation:

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2 years ago

Select the properties and typical applications for the high carbon steels.

yanalaym [24]

Answer:

<u>Option-(A)</u>

Explanation:

<u>Typical applications for the high carbon steels includes the following;</u>

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2 years ago

Sun of first 1 nayural numbers

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Answer:

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$n(n + 1) \div 2$

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A plot of land is an irregular trangle with a base of 122 feet and a height of 47 feet what is the area of the plot?

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Answer:

150 is the area

Explanation:

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