# As A Crate Slides Down An Inclined Rough Surface, Its Total Mechanical Energy

As a cprice slides down an inclined unstable surface, its complete mechanical energy decreases.Because the surconfront of the incline is stormy, friction is robbing mechanical energy from the crate all the method down, and blowing it ameans as warm right into the neighboring air.

Glaciers approximately the civilization have actually been _____. A.shrinking B.enhancing in dimension C.enhancing in density D.decreasing in density

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The correct alwaei.com is A. Shrinking

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a truck is traveling on a straight stretch of of highmeans at 120 km/h. the driver spots a police automobile ahead. if the truck slows wi

alwaei.com:

It takes 1.67 secs to alleviate its speed to the legal limit

Explanation:

The primary point in this problem is the distinction in between the units of

the speeds and acceleration

The unit of the speeds is km/hour

The unit of the acceleration is m/sec²

So we need to to readjust the systems of the speeds from km/hour to

meter/second

1 kilometres = 1000 m

1 hour = 60 × 60 = 3600 seconds

Then 120 km/hr = m/s

96 km/hr = m/s

To uncover the time of deceleration (to reduced the speed) we will certainly use:

v = u + at. wright here u is the initial velocity, v is the final velocity, a is the

acceleration and t is the time

v = 26.67 m/s , u = 33.33 m/s , a = - 4 m/s²

Substitute these values in the preeminence

26.67 = 33.33 + (- 4)t

Subtract 33.33 from both sides

- 6.66 = - 4t

Divide both sides by - 4

t = 1.67 seconds

It takes 1.67 seconds to alleviate its rate to the legal limit

7 0
4 months ago

Which of the complying with statements describes a means that basic makers make job-related easier?
Elina <12.6K>
Pretty sure it"s the last one:"reduce the dimension of the input pressure needed to percreate a task"
5 0
6 months ago
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