If the box is moving at constant velocity, net force must be zero, so:
F + fr = 0
fr = -F
<u>fr = -40 N</u>
Answer:
In the physical sciences, subatomic particles are smaller than atoms. They can be composite particles, such as the neutron and proton; or elementary particles, which according to the standard model are not made of other particles. Particle physics and nuclear physics study these particles and how they interact.
Explanation:
Answer:
Fluid fricton goes to Static friction and sliding friction goes to rolling friction
Explanation:
Construction, like building a home/building, digging, like in a mine, and opening a soda can, where the part to open is a lever.
