This is false. Even though the first part is true, the second isn't because morals and values are simply widely accepted opinions that most humans have, and you can't test opinions with the scientific method, only facts!
Answer:
1800 meters
Explanation:
Average speed=1.2 m/s
time= 1500 secs
Displacement = average speed × time
= 1.2 × 1500
=1800 meters
Formula for potential energy is V=mgh, where m is mass in KG, g is earth acceleration (10 m/s^2), and h its height in meters. We know mass, acceleration is constant and also known, we know height also. Lets substitute
V=75*10*300=225000[J]=225[kJ] - its the answer
Cause he left out the noble gases out of the periodic table for one good reason, 1: He did not know them
Alpha particles, because they are the heaviest ones (helium nuclei) and will travel around the body.