## Calculus (3rd Edition)

$a)\ average\ velocity = 100\ km/hr$ $b)\ average\ velocity = 100\ km/hr$ $c)\ average\ velocity = 0\ km/hr$ $d)\ average\ velocity = -50\ km/hr$
We know that: $average\ velocity = \frac{total\ distance\ traveled}{total\ time}$ So we can substitute the values into the equation as follows: $$a)\ average\ velocity = \frac{50-0}{0.5-0} = 100\ km/hr$$ $$b)\ average\ velocity = \frac{100-50}{1.0-0.5} = 100\ km/hr$$ $$c)\ average\ velocity = \frac{100-100}{1.5-1} = 0\ km/hr$$ $$a)\ average\ velocity = \frac{50-100}{2-1} = -50\ km/hr$$