b. Ron bicycles forward with an acceleration of 2.1 m/s2. If he is applying a forward force of 195 N, what is his mass?

That depends on what kind of environ meant it is in  in space it has the same force that was applied when the velocity was gained

If you are a plato user the answer would be "a decrease in the overall volume of gases" i just completed the test and this was the answer. hope it ! (:

Answerto determine which rock layer in a canyon wall formed first;