Please HelpI have been posting this question and no one has helped A train leaves Houston and travels north at 65km/h. After it travels 150km, it turns left and travels 60km towards the west at 55km/h.

How much time was spent traveling to the north?

What was the total time of travel for the train?

As a car drives with its tires rolling freely without any slippage, the type of friction acting between the tires and the road is 100) a) static friction. b) kinetic friction. c) a combination of static and kinetic friction. d) neither static nor kinetic friction, but some other type of friction. e) it is impossible to tell what type of friction acts in this situation.

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.

The amount of potential energy possessed by an elevated object is equal to what?