What is the acceleration of a boat that takes 16 seconds to change from a speed of 223 m/s to 343 m/s?

The climate of the continental united states is generally 1. tropical 2. temperate 3. arctic 4. highland

Three alkali metals in group 1 are a. calcium, strontium, barium b. boron, aluminum, gallium c. sodium, potassium, rubidium d. fluorine, iodine, chlorine

The organism shown is a free-living one that is anchored to the bottom of ponds and streams during one stage of its life cycle what is the common name for the group to which this organism belong