5. A 72 kg firefighter slides down a fire pole with a downward acceleration of 2.80 m/s2. What is the force of friction exerted by the pole on the firefighter?(You will need to find
the weight force acting on the object by knowing the mass.)
or

Groups of organs that work together to complete a process in the body are called: a. cells b. tissues c. nerves d. systems

Mutt and jeff are running along a path each pushing a cart loaded with rocks. if mutt's wagon has a mass two times greater than jeff's and they want to stay together, arriving at their destination at the same time, what must happen? a) jeff should slow down so mutt can catch up. b) mutt must use half as much force to push his cart. c) mutt must use twice as much force to push his cart. d) mutt and jeff will use the same force, but mutt will take bigger steps.

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?