Find the average acceleration of a northbound subway train that slows from 12 m/s to 9.6 m/s in 0.9 s
2.7 m/s
-2.7 m/s
2.7 m/s2
-2.7 m/s2

Hello there.

Find the average acceleration of a northbound subway train that slows from 12 m/s to 9.6 m/s in 0.9 s

2.7 m/s2

The answer is b because a,c,and d are opinons

Answerit curves up and levels out.explanationwe assume that the container contains absolutely no ammonia to begin with as it states that "nitrogen gas and hydrogen gas" react to "produce ammonia."at dynamic equilibrium, the product and reactant concentrations are equal.this means that, starting from a concentration of zero, [nh₃] must curve "up" from zero and then level out to a constant concentration.