Movies and tv shows sometimes portray a person being thrown backwards a sizable distance as a result of being struck by a bullet. let's consider a forensics lab experiment. a 10.0-gram bullet is fired at 45 degrees above the horizontal with a velocity 378 m/s so that it immediately embeds itself into a 74.3-kg wood block that sits on a level floor. the bullet's trajectory is such that the combined mass (block plus bullet) is launched, without any rotation, also at an angle of 45 degrees above the horizontal. neglecting the effects of air resistance, calculate the maximum distance that the block of wood (with embedded projectile) would fly backwards. based on this calculation, evaluate the realism (or lack thereof) of the typical tv/movie portrayal.
as per first law of thermodynamics we know that
here we know that
e = internal energy of the gas
q = heat given to the system
w = work done by the system
so this is basically energy conservation law in which q stands for the heat energy given to the system
some results for higher air temperature caused by global warming are rising sea levels that are caused by thermal expansion, melting of glaciers and ice sheets, and last but not least warming of the ocean surface.
the first one is d hunted with stone-tipped spears
the second one is a