Question

in which two ways are resources classified based on availability ? explain with examples .
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Answer 1

Renewable and non renewable

examples of renewable resources is solar energy and non renewable is fossil fuels

Hope it helps you...

Answer 2

Explanation:

Given:-

Uniform velocity of bus, u = 54 km/h.

Final velocity of bus, v = 72 km/h.

Time taken, t =10 seconds.

To Find:-

Acceleration of bus is m/s ?

Distance covered by bus ?

Formula to be used:-

v = u + at

s = ut + ½ at²

Solution:

$\qquad$☀️First we need to change the uniform and final velocity into meter/second. To change multiply by 5/18.

$\qquad$❏ Uniform velocity (u) = 54(5/18)

$\qquad$❏ u = 15 m/s

$\qquad$❏ Final velocity (v) = 72(5/18)

$\qquad$ v = 20 m/s.

Using First equation of motion :-

$\pink{\qquad\leadsto\quad \pmb {\mathfrak{ v = u + at}}}$

$\qquad\leadsto\quad \pmb {\mathfrak{20 = 15 + a(10)}}$

$\qquad\leadsto\quad \pmb {\mathfrak{20 – 15 = 10\times a}}$

$\qquad\leadsto\quad \pmb {\mathfrak{5 = 10\times a}}$

$\qquad\leadsto\quad \pmb {\mathfrak{ \cancel{\dfrac{5}{10}} = a}}$

$\pink{\qquad\leadsto\quad \pmb {\mathfrak{a= 0.5 m/s²}}}$

Acceleration of the bus is 0.5 m/s².

Using Second equation of motion :-

$\pink{\qquad\leadsto\quad \pmb {\mathfrak{s = ut + ½ at²}}}$

$\qquad\leadsto\quad \pmb {\mathfrak{s = 15 \times 10 + ½ \times 0.5 \times (10)²}}$

$\qquad\leadsto\quad \pmb {\mathfrak{s = 150 + \dfrac{0.5}{2}\times 100}}$

$\qquad\leadsto\quad \pmb {\mathfrak{s = 150 + 0.5(50)}}$

$\qquad\leadsto\quad \pmb {\mathfrak{ s = 150 + 25}}$

$\pink{\qquad\leadsto\quad \pmb {\mathfrak{ s = 175 m}}}$

Hence, the distance covered by bus is 175 m.

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$\therefore\:\underline{\textsf{The acceleration of the body is \textbf{1.6\:m/s²}}}.$

$\qquad$☀️Equations of motion :-

$\qquad$ ⑴ v = u + at

$\qquad$ ⑵ s = ut + ½at²

$\qquad$ ⑶ v² - u² = 2as

v = final velocity

u = initial velocity

s = displacement

t = time taken

a = acceleration

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