Answer:
2/3 (2over3)
Step-by-step explanation:
this is your answer.............
There must he a circulation. May not be causation.
Answer
Speed depends on the amount of force you put into it... it the force is the same on the each surface then it will depend on the roughness of the surface as in friction
x2=400
x=√400
=20
20^2=400
