The power rocket coaster track is 3,265 feet and the ride is 90 seconds long. what is the speed of the coaster in feet per second?

What is the conversion factor between kg/m^3 and g/m^3. express your experimental values for the densities in kg/m^3.

11. you want to calculate the displacement of an object thrown over a bridge. using -10 m/s2 for acceleration due to gravity, what would be the total displacement of the object if it took 8 seconds before hitting the water?

An electron and a proton have the same kinetic energy upon entering a region of constant magnetic field and their velocity vectors are perpendicular to the magnetic field. suppose the magnetic field is strong enough to allow the particles to circle in the field. note: you'll need to look up the masses for an electron and proton. 1) what is the ratio of the radii of their circular paths rp/re?