An 18.0-Newton wooden block slides across a horizontal wooden floor at constant velocity. Calculate the magnitude of the force of kinetic friction between the block and the floor.
[Show all work, including the equation and substitution with units.]

Which statements about tornadoes are true? check all that apply. (a) about 12,000 tornadoes hit the united states every year. (b) a tornado looks like a funnel. (c) tornadoes are deadly atmospheric storms that cause millions in damages each year. (d) tornadoes can reach wind speeds of more than 300 miles per hour. (e) kansas is the state with the most tornadoes. (f) you will always notice a funnel before a tornado strikes.