"Spiderman is swinging from skyscrapers. He swings north 11 km, chasing down the Green Goblin. He then swings south 7 km to get a hot dog. After that, he swings 15 km to go to school. Finally, at the end of the day, he swings back home south 6.5 km to his apartment. He did this all in 8 hours A. What is Spiderman's average velocity?
B. What is Spiderman's average speed?

Please at least give me help with how to calculate this. Don't waste your time doing the actual problem. I just need the method of solving it.

Imagine you had to physically add electrons, one at a time, to a previously neutral conductor. you add one electron very easily, but the second electron requires more work. in your initial post to the discussion, explain why this is. also, what happens to the work needed to add the third, fourth, fifth, and subsequent electrons

This is important 1. what happens to the speed of molecules in water vapor when it condenses to form a liquid? (2 points) the molecules slow down. the molecules speed up. the molecules slow down and then speed up. the molecules speed up and then slow down. 2. how might human activities change to compensate for a decrease in water supplies? (2 points) humans might build a factory. humans might build drainage systems. humans might extract more water from the ground. human behavior does not change because of the water cycle. i'll be grateful if anyone can answer these 2 questions !

A200-n force is applied to the foot-operated air pump. the return spring s exerts a 2.6-n·m moment on member oba for this position. determine the corresponding compression force c in the cylinder bd. if the diameter of the piston in the cylinder is 40 mm, estimate the air pressure generated for these conditions. state any assumptions. enter a positive number for the compression force c.