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LekaFEV [45]
3 years ago
10

A car traveling at a speed of 30 m/s encounters an emergency and comes to a complete

Physics
1 answer:
Natasha2012 [34]3 years ago
4 0

Answer:

Explanation:

Use the one-dimensional equation

v_f=v_0+at which says that the final velocity of an object is equal to the object's initial velocity plus its acceleration times time. We are looking for time. That means the equation looks like this:

0 = 30 + (-4)t and

-30 = -4t so

t = 7.5 sec

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3 0
3 years ago
An ideal gas occupies 0.4 m3 at an absolute pressure of 500 kPa. What is the absolute pressure if the volume changes to 0.9 m3 a
sveticcg [70]

Answer:

<h2>2.22 kPa</h2>

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The new volume can be found by using the formula for Boyle's law which is

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Since we are finding the new volume

V_2 =  \frac{P_1V_1}{P_2}  \\

From the question we have

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We have the final answer as

<h3>2.22 kPa</h3>

Hope this helps you

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