In the above problem, we need to find mass of the second child, so that the Center of Mass remains at the origin( pivot).
CM= m1r1+m2r2/m1+m2
0= 20*-2+16*r2/20+16
r2= 40/16
r2= +2.5 m
Answer:
I believe that the correct answer is D. reference point.
A. Increase Energy because simple machines are supposed to help humans use less energy and less force when doing a task that normally requires a lot of force and energy
The chemical bonds alow it to pass to the other object.
<span>plums, they contain antioxidants and a lot of vitamin C and they're only 30 cals,</span>
