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Nataly_w [17]
3 years ago
7

The net force on a car accelerating

Chemistry
1 answer:
mafiozo [28]3 years ago
7 0

Answer:

<h2>800 kg</h2>

Explanation:

The mass of the car can be found by using the formula

m =  \frac{f}{a}  \\

f is the force

a is the acceleration

From the question we have

m =  \frac{2000}{2.5}  \\

We have the final answer as

<h3>800 kg</h3>

Hope this helps you

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Elena L [17]

Answer:

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correct option is b) 515 m/s

Explanation:

given data

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to find out

root mean square velocity of nitrogen molecules

solution

we know that root mean square velocity of gas is Vrms = \sqrt{\frac{3RT}{M}}      .......................1

mass of gas = M

universal gas constant = R

temperature = T

and we know mass of nitrogen = 28 g = 28 × 10^{-3} kg

Vrms = \sqrt{\frac{3RT}{M}}

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root mean square velocity of nitrogen at 25°c is 515 m/s

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