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3 years ago

Among U.S. states in 2009, Florida had the third-highest number of fatalities in collisions involving __________.

Advanced Placement (AP)

2 answers:

Setler [38]3 years ago

7 0

a driver with a bal of.01 or more

anyanavicka [17]3 years ago

3 0

Answer:

A. a driver with a BAL of .01 or more.

Explanation:

The BAL (blood alcohol level) or BAC (blood alcohol content) is a commonly used metric of alcohol intoxication that indicates how much alcohol is present in someone's body. This measurement is commonly used for legal purposes, such as driving under the influence of alcohol. Driving while intoxicated is an extremely dangerous practice. Alcohol can slow our reaction time, make our movements less precise and compromise our cognitive abilities.

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3 years ago

For time t≥0 , the acceleration of an object moving in a straight line is given by a(t)=sin(t23). what is the net change in velo

Firlakuza [10]

The net change in velocity during the given time interval is equal to -0.665.

<u>Given the following data:</u>

Initial time = 0.75 seconds.

Final time = 2.25 seconds.

Acceleration, $a(t) = sin(\frac{t^2}{3} )$

<h3>How to calculate the net change in velocity.</h3>

Since acceleration is the rate of change of velocity of an object, we would derive an expression for the velocity by differentiating with respect to time:

$V(t) = \frac{d}{dt} a(t)\\\\V(t) = \frac{d}{dt} (sin(\frac{t^2}{3} ))\\\\V(t) = cos( \frac{t^2}{3})(\frac{2t}{3})\\\\V(t) = \frac{2t}{3}cos( \frac{t^2}{3})$

Substituting the time interval, we have:

$V(t) = \frac{2\times 2.25}{3}cos( \frac{2.25^2}{3})- \frac{2\times 0.75}{3}cos( \frac{0.75^2}{3})\\\\V(t) = \frac{4.5}{3}cos( \frac{5.0625}{3})- \frac{1.5}{3}cos( \frac{0.5625}{3})\\\\V(t) =1.5(-0.11643)-0.5(0.98247)$

V(t) = -0.665.

Read more on acceleration here: brainly.com/question/24728358

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