A2000kg test car, traveling 60 ms hits a brick wall. using motion pictures, the time involved is determined to be 0.050 s. what impulse does the car impart to the wall

6,000 N-s

Explanation:

In order to calculate the impulse of the car when hitting a brick wall, we just have to first calculate the force of the car, force equals mass times acceleration, since the speed of the car is 60 m/s and the brick wall is at 0 m/s the acceleration would be 60 m/s, then you just multiply:

And now you just multiply that by the time that the car is involved in the hit with the wall.

from my research i have to the conclusion that decomposers, such as fungi, bacteria and invertebrates, play a critical role in nutrient cycling and without them the earth's ecosystem may not support life as we know it. elements such as carbon, nitrogen and phosphorus exist in limited amounts on earth, although huge amounts of carbon are being released into the atmosphere from underground sources now by humans. it is still extremely important that other nutrients be retained by the process of re-use. decomposers are organisms that are able to chemically break down dead material and make these elements available for use by other organisms. without this breakdown of dead material, dead bodies would pile up. so decomposers also play a role in clean up also. without them, life might not continue as we know it and dead material would overwhelm the earth.    

c

explanation: