Question

The chart shows the times and accelerations for three drivers.

Answer 1

Answer:

D

Explanation:

Answer 2

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

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

So

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