50 j of work was performed in 20 seconds. how much power was used to do this task? a. 4 w b. 24.5 w c. 0.4 w d. 2.5 w

During which interval are the persons represented by the graph not moving? a) 0 to 0.5 hrs b) 1.5 to 2 hrs c) 2 to 2.5 hrs d) 4.5 to 5 hrs

Avolcano erupts next to a grassland area in a valley. a. describe three ways in which material released by the volcano could impact the grassland area. b. describe three ways in which the grassland ecosystem could recover after a volcanic eruption.

Idon’t know the answer to it and am stuck.