What steps can you take in your everyday life to properly care for your skeletal system? (Site 1)

Iwill give brainliest if you answer right : )

At time t=0, a particle is located at the point (3,6,9). it travels in a straight line to the point (5,2,7), has speed 8 at (3,6,9) and constant acceleration 2i−4j−2k. find an equation for the position vector of the particle.

What is the coefficient of kinetic friction μk between the block and the tabletop?