A 5.0-g bullet leaves the muzzle of a rifle with a speed of 320 m/s. What force (assumed constant) is exerted on the bullet while it is traveling down the 0.82-m-long barrel of the rifle?

312.195 N

Explanation:

We know that the product of force and distance equals energy. In this case, it is equal to kinetic energy of the bullet. Since we have mass of bullet as 5g or 0.005 kg and velocity as 320 m/s then we can get energy. The distance here is given as 0.82 m

most of them using statistics and defining how things are being measured

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..