A device that does work with one movement and changes the size or direction of a force is a simple machine.
ANSWER:
the correct answer is D.Yes; without reproduction, once the living organisms died, there would be no offspring to replace them.
TIP: bc if a species dies and it doesnt reproduce that species will go extinct, and remember every specie plays a role in life (but they are some animals that dont and are just a threat to the world). so reproducing is the only way to keep their generation going!
~batmans wife dun dun dun...aka ~serenitybella
Answer:
C. It is radiation leftover from the Big Bang
Hello
The bullet is moving by uniformly accelerated motion.
The initial velocity is
![v_i=180~m/s](https://tex.z-dn.net/?f=v_i%3D180~m%2Fs)
, the final velocity is
![v_i=0~m/s](https://tex.z-dn.net/?f=v_i%3D0~m%2Fs)
, and the total time of the motion is
![\Delta t=0.02~s](https://tex.z-dn.net/?f=%5CDelta%20t%3D0.02~s)
, so the acceleration is given by
where the negative sign means that is a deceleration.
Therefore we can calculate the total distance covered by the bullet in its motion using
![S=v_i t + \frac{1}{2}at^2 = 180~m/s \cdot 0.02~s + \frac{1}{2}(-9000~m/s^2)(0.02~s)^2=1.8~m](https://tex.z-dn.net/?f=S%3Dv_i%20t%20%2B%20%5Cfrac%7B1%7D%7B2%7Dat%5E2%20%3D%20180~m%2Fs%20%5Ccdot%200.02~s%20%2B%20%5Cfrac%7B1%7D%7B2%7D%28-9000~m%2Fs%5E2%29%280.02~s%29%5E2%3D1.8~m)
So, the bullet penetrates the sandbag 1.8 meters.