(PLEASE HELP ME, I NEED THIS RETAKE FOR SCIENCE AND I HAVE TO GET CAUGHT UP BEFORE NEXT MONTH).

1. A person walks 3 kilometers in an hour, rests for an hour, and then walks 3 more kilometers in another hour. What is the average speed of the person over the 3 hours? INCLUDE your calculations and units.

2. A ship sails north for 2 hours, traveling a total of 15 miles. Then the ship turns south and travels 6 miles in an hour. If north is taken as the positive direction, what is the velocity of the ship? INCLUDE your calculations and units.

What is the magnitude of the resultant vector round your answer to the nearest tenth

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is

Researchers determine that the biodiversity in a woodland region is declining. they identify two major threats to the region's biodiversity, a method to address each threat, and the expected outcome of each method. this information is shown in the table. a) reforestation would not benefit many species because most forest species live on the ground. b) reforestation would take the longest time to be effective because trees take several years to grow. c) biological augmentation would benefit only a few species because is is typically not very effective. d) biological augmentation would take less time to ve effective because it targets the majority of prey species.