Which of the following examples demonstrates acceleration? question 17 options: a boy running at a constant speed across the street. a car traveling at 60 mph turns left around a curve. a horse standing in a pasture. a track star is maintaining the same speed as he crosses the finish line.

Compounds a and b react to form compounds c and d according to the equation: aa + bb → cc + dd. under which conditions will the rate law be given by the equation: rate = k[a]a[b]b? a. the reaction takes place in one step. b. the reaction is endothermic. c. the reaction is exothermic. d. the reaction involves more than one step.