What fundumental physical quantites are combined to give the physical quantities menoted length, mass, time and electric current

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

Each line (unit) on the horizontal axis represents: 5 years 10 years 20 years all of the above

Which of the following situations would produce an average velocity of zero? o a. a horse galloping in a field b. a round-trip to school and back o c. a trip, first to the moon, then onto mars o d. the criss-crossing path of a flying bug