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CaHeK987 [17]
3 years ago
5

A car is traveling at 10 m/s starts to decelerate steadily. It comes to a complete stop in 20 seconds what is it’s acceleration

Physics
2 answers:
zhannawk [14.2K]3 years ago
6 0

Hello!

A car traveling at 10 m/s starts to decelerate steadily. It comes to a complete stop in 20 seconds. What is it's acceleration ?

We have the following data:

Vi (initial velocity) = 10 m/s (starts)

Vf (final velocity) = 0 m/s (stop)

t (time) = 20 s

a (acceleration) = ? (in m/s²)

<u><em>We apply the data to the formula of the hourly function of the velocity, let us see:</em></u>

V_f = V_i + a*t

0 = 10 + a*20

- 10 = 20\:a

20\:a = - 10

a = \dfrac{-1\diagup\!\!\!\!0}{2\diagup\!\!\!\!0}

\boxed{\boxed{a = - 0.5\:m/s^2}}\Longrightarrow(the\:car\:slows\:down)\:\:\:\:\:\:\bf\green{\checkmark}

<u><em>Answer:  </em></u>

<u><em>The acceleration is -0.5 m/s² (decelerate)  </em></u>

________________________________

\bf\red{I\:Hope\:this\:helps,\:greetings ...\:Dexteright02!}

Ludmilka [50]3 years ago
3 0

Answer:

-0.5 m/s

Explanation:

given:

u (initial velocity) = 10 m/s

v (Final velocity) = 0 m/s (because it is given that it comes to a complete stop)

t (time taken) = 20 s

therefore,

acceleration = v - u / t

a = 0 - 10 / 20  

a = -10 / 20

a =  -1/2

a = -0.5

There is a acceleration of -0.5 m/s

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Answer:

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So the difference in time is

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3 years ago
In a long, straight, vertical lightning stroke, electrons move downward and positive ions move upward and constitute a current o
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Electrons go downward and positive ions move upward in a long, straight, vertical lightning stroke, creating a current of magnitude I = 20.0 kA.

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The angular frequency is given as:

ω = qB /m = 2πN / Δt

Where the number of revolutions is N.

So,

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brainly.com/question/1100341

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His experiments were addressed by methodologies that allowed him to precisely find his mathematical calculations and to verify theories he was developing over time. His manuscripts were key to disseminate the applied method and extrapolate them to other scientific areas.

Therefore the correct answer is C.

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Answer:

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Part b)

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Part a)

Average acceleration is given as

a = \frac{v_f - v_i}{\Delta t}

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Part B)

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7 0
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