Which of these shows unbalanced forces at work on an object? A. a car driving at a constant 25 miles per hour on a straight street B. an ice skater turning as he skates around an ice rink C. a water skier pulled by a boat at a constant 30 mph D. a bicycle chained to a bike rack at school

As a car drives with its tires rolling freely without any slippage, the type of friction acting between the tires and the road is 100) a) static friction. b) kinetic friction. c) a combination of static and kinetic friction. d) neither static nor kinetic friction, but some other type of friction. e) it is impossible to tell what type of friction acts in this situation.

Aquarterback pedals 3.3meters southward and then run 5.7meters northward. whats the distance ? and whats the displacement?

If the ama of the inclined plane below is 2, calculate the ima and efficiency. ima = efficiency =