Calculate the speed of each runner from the graph in figure 4.15.

Asubmarine has a "crush depth" (that is, the depth at which water pressure will crush the submarine) of 250 m. what is the approximate pressure (water plus atmospheric) at this depth? (recall that the density of seawater is 1025 kg/m3, g = 9.81 m/s2, and 1 kg/(ms2) = 1 pa = 9.8692 10-6 atm.) a. 34.8 atm b. 24.8 atm c. 25.8 atm d. 7.8 atm

Aria drove to the store, did some shopping, and then came home. during maria's trip, when was her displacement equal to zero?

Give one example to show that when substances are mixed,it may result in a chemical or a physical change depending on the conditions.