You travel 250 km at 45 degrees South of East in 6.5 hours, then turn and travel 155 km at 45 degrees North of East in 3.5 hours A) What is the elapsed time?
B) What is the total distanced traveled?
C) What is the total displacement?
D) What is the average speed for the trip?
E) What is the average velocity for the trip?

Which of the following statement is false

Uranium has two naturally occurring isotopes. 238u has a natural abundance of 99.3% and 235u has an abundance of 0.7%. it is the rarer 235u that is needed for nuclear reactors. the isotopes are separated by forming uranium hexafluoride uf6, which is a gas, then allowing it to diffuse through a series of porous membranes. 235uf6 has a slightly larger rms speed than 238uf6 and diffuses slightly faster. many repetitions of this procedure gradually separate the two isotopes. what is the ratio of the rms speed of 235uf6 to that of 238uf6? express your answer to five significant figures.

Based on this activity, is kinetic energy always transformed into potential energy?