A roller coaster starts down hill at 15.3 m/s. Five and half seconds later, its speed is 42 m/s. Find the acceleration of the roller coaster.?

This is just simple math. Your answer would be 26.7 m/s

Explanation:

a high pressure system is a dense air mass that is usually cooler and drier than the surrounding air. a low pressure system is a less dense air mass that is usually wetter and warmer than the surrounding air.

in general, areas that experience high atmospheric pressure also experience fair weather. low pressure systems can cause the formation of clouds and storms. air usually flows from areas of high pressure to areas of low pressure..

b.

explanation: