Question1
A subway train starting from rest leaves a station with a constant acceleration. At the end of 9.34 s, it is moving at 15.0374 m/s. What is train's displacement in ?rst 5.99628 s of motion?
Question2
The mass of a copper atom is 1.56 10-25 kg, and density of copper is 8 920 kg/m3.
(a) establish the number of atoms in 1 cm3 of copper
(b) imagine the one cubic centimeter as created by stacking up identical cubes, with one copper atom at the center of each. Establish volume of each cube.
(c) Find out the edge dimension of each cube that represents an estimate for the spacing between atoms.