The density of the blade is constant throughout its length, and so a 10%-mass. fragment will have a cross-sectional area of 10% of the full blade. In practice, the. area of a 10%-mass fragment will vary depending upon its shape, and upon whether. it consists of the only the outer shell or the internal beams as well.
Marijuana use ranks second behind alcohol in regards to the most commonly abused drugs by teenagers. There has been an increase in marijuana use among teenagers due to the increasing societal attitudes towards tolerance and perceptions that marijuana is not a dangerous drug.
The most common drugs abused by teens arenât much different from those of adults. But the reasons for abuse may be different as teens often abuse a substance based on its accessibility. Teens are also more likely to take excessive amounts of drugs and alcohol because of how they perceive the risks and dangers. 1  Alcohol Alcohol is the substance most commonly abused by teens. The social acceptance of drinking among people of legal drinking age can lead many teens to view alcohol as relatively harmless.