***1)an airplane starts from rest and accelerates at a constant 3.00 m/s2 for 30.0 s before leaving the ground. what is its displacement during this time?

As seen in a us weather map, the h (or high) and l (or low) symbols indicate regions where surface air pressures are high or low, respectively, compared to surrounding areas. an h is plotted where the air pressure is highest and an l is plotted where the air pressure is lowest. proceeding outward and away from the center of a high pressure system, the air pressure "