The object is moving faster along A than along B.

The object is moving faster along B than long A.

The object is moving the same speed along A and B.

The object is accelerating along A and B

 $v=\frac{d}{t}=\frac{100}{100}=1\ \frac{m}{s}$  

 $v=\frac{d}{t}=\frac{60}{20}=3\ \frac{m}{s}$  

 $v=slope=\frac{rise}{run}=\frac{\uparrow60}{\uparrow20}\approx0.33\ \frac{m}{s}$  

 $v=slope=\frac{y_2-y_1}{x_2-x_1}=\frac{100-40}{100-80}=3\ \frac{m}{s}\$  

 $v=\frac{d}{t}=\frac{20}{60}\approx0.33\ \frac{m}{s^2}^{ }$  

The object is traveling at a constant speed.

The object is moving back towards start.

The object is decelerating (decreasing its speed).

The object is increasing its speed.

Constant speed

accelerating (increasing speed)

decelerating (slowing down constantly)

stopped

0-20 seconds

20-30 seconds

20-50 seconds

all of the above

zero acceleration

Constant speeding

decreasing speed

increasing speed

OA

AB

BC

DE

 $v=\frac{d}{t}$  

 $slope\ =\ \frac{rise}{run}$  

 $a=\frac{\Delta v}{\Delta t}$  

 $E=mc^2$  

$v=\frac{d}{t}=\frac{-25}{20}=-1.25\ \frac{m}{s}$

$a=\frac{\Delta v}{t}=\frac{25}{50}=0.5\ \frac{m}{s^2}$

$a=\frac{\Delta v}{t}=\frac{-25}{20}=-0.8\ \frac{m}{s^2}$

$a=\frac{\Delta v}{t}=\frac{20}{25}=1.25\ \frac{m}{s^2}$

$a=\frac{\Delta v}{t}=\frac{-25}{20}=-1.25\ \frac{m}{s^2}$