A soccer ball is kicked from the ground with an initial speed of 19m/s at an angle of 45 degrees above the horizontal. A player 55 m away in the direction of the kick starts running to meet the ball at the instant. What must be his average speed if he is to meet the ball just before it hits the ground?

a.

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..

thermal energy is the answer