I think it's Barium sulfate, the soild and percipitate
<h2>I'm pretty sure it's</h2><h2>"<u>a motorcycle moving down the road.</u>"</h2><h3></h3><h3>The truck isn't moving so the truck cannot have momentum.</h3><h3>Momentum is basically "mass in motion."</h3><h3></h3><h3><em>Please let me know if I am wrong.</em></h3>
The answer is the vehicle. At the precise moment of the impact in a collision, there is the release of energy when a vehicle strikes another vehicle or another object. Earlier to an impact, a vehicle and everything inside the vehicle is traveling at whatever speed the vehicle had been going. As the collision continues, the vehicle slowly loses energy. However, the vehicle occupants and any others items in the vehicle continue to move forward at the same speed as the vehicle had been traveling prior to impact.
Wellll, let me think about that ...
I don't think I'd agree that you can characterize the amplitude of
a wave according to the density at only one point in it. After all ...
a tiny wave in steel would be much denser at a compression than
a huge wave in air would be.
The amplitude of any wave is described as the difference between
a peak and the resting value. Or even better ... half of the difference
between a maximum and a minimum.
So if you're looking at a longitudinal wave, like sound, I'd say if you
want to describe its amplitude, then you have to look at the density
at two points ... either the difference between the compression and
the resting densities, or the difference between the greatest compression
and the greatest rarefaction.
That's my opinion. I could be wrong.
