Physics, 31.08.2019 19:30 leslieperez67

The chart shows the times and accelerations for three drivers.
which lists them from greatest to lowest change in velocity?
a. dustin → diego → kira
b. dustin → kira → diego
c. kira → dustin → diego
d. kira → diego → dustin

The chart shows the times and accelerations for three drivers. which lists t

Answers: 2

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Answer from: TookMurr

Let

D------> change in velocity in $\frac{m}{s}}$

a------> acceleration in $\frac{m}{s^{2}}$

t-------> is the time in sec

we know that

$a=\frac{D}{t} \\ \\ D=a*t$

Find the change in velocity for each case

case 1) Kyra

$a=5.2\ \frac{m}{s^{2}} \\ \\ t=6.9\ s$

Substitute in the formula above

$D=a*t\\ D=5.2*6.9\\ D=35.88\ \frac{m}{s}$

case 2) Dustin

$a=8.3\ \frac{m}{s^{2}} \\ \\ t=3\ s$

Substitute in the formula above

$D=a*t\\ D=8.3*3\\ D=24.9\ \frac{m}{s}$

case 3) Diego

$a=6.5\ \frac{m}{s^{2}} \\ \\ t=4.2\ s$

Substitute in the formula above

$D=a*t\\ D=6.5*4.2\\ D=27.3\ \frac{m}{s}$

The list from greatest to lowest change in velocity is

Kira ( $35.88\ \frac{m}{s}$ ) → Diego ( $27.3\ \frac{m}{s}$ ) → Dustin ( $24.9\ \frac{m}{s}$ )

therefore

the answer is the option

d. Kira → Diego → Dustin

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The chart shows the times and accelerations for three drivers.
which lists them from greatest...

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