3) A 2.0 kg box sliding along a smooth floor with a velocity of 10.0 m/s hits a rough patch and slides to a stop in 2.0 s.
a. Draw a free body diagram for this problem. (5 pts.)
b. What is the frictional force on the box as it is slowing to a stop? (5 pts.)
c. What is the coefficient of kinetic friction between the box and the floor?
(5 pts.)

Which of the following harmful chemicals are found in tobacco smoke? a. carbon monoxide b. carbon dioxide c. nicotine b. carbon dioxide d. both a and c

Aprojectile is launched from ground level with an initial velocity of v 0 feet per second. neglecting air resistance, its height in feet t seconds after launch is given by s equals negative 16 t squared plus v 0 t. find the time(s) that the projectile will (a) reach a height of 192 ft and (b) return to the ground when v 0equals112 feet per second. (a) find the time(s) that the projectile will reach a height of 192 ft when v 0equals112 feet per second. select the correct choice below and, if necessary, fill in the answer box to complete your choice.

Organelles are 1. responsible for producing power for the cell 2. tiny structures in the cell that carry out the cell's activities 3. responsible for digestion in the cell 4. found outside of the membrane