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3 years ago

a Ferrari with an initial velocity of 10 m/s, comes to a complete stop in 5 seconds, what will its acceleration be?

Physics

2 answers:

Aleks04 [339]3 years ago

8 0

Acceleration = (change in speed) / (time for the change)

Change in speed = (speed at the end) minus (speed at the beginning)

Change in speed = (zero) minus (10 m/s) = negative 10 m/s

Acceleration = (-10 m/s) / (5 sec)

Acceleration of the Ferrari = -2 m/s²

Democratically, it doesn't have to be a Ferrari. If my 16-yr-old Dodge is going 10 m/s and stops in 5 sec, its acceleration would be the same number.

11111nata11111 [884]3 years ago

6 0

10 m/s divided by 5 s

-2m/s/s

minus - deceleration

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Explanation:

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Given that,

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siniylev [52]

Answer:

$v = 4.44 \times 10^5 m/s$

Explanation:

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now we know that it requires 351 nm wavelength of photons to just eject out the electrons

so we can say

$W = \frac{hc}{351 nm}$

here we know that

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$\frac{1242 eV-nm}{303 nm} = 3.54 eV + \frac{1}{2}(9.1 \times 10^{-31})v^2$

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2 years ago

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Lapatulllka [165]

Answer:

Volume will increase by factor 2

So option (A) will be correct answer

Explanation:

Let initially the volume is V pressure is P and temperature is T

According to ideal gas equation $PV=nRT$ , here n is number of moles and R is gas constant

So $V=\frac{nRT}{P}$ ....................eqn 1

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Now comparing eqn 1 nad eqn 2

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So option (A) will be correct answer

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