A motorcycle skids for a distance of 2.0 m with the icy road pushing on its tires with force of 120 N as its brakes are applied
What is the change in kinetic energy for the motorcycle?
Round the answer to two significant digits.

If an inclined plane is 5 m long and 2 m high, what is its mechanical advantage? a. 2.5 b. 3 c. 7 d. 10

Determine the maximum r-value of the polar equation r =3+3 cos 0

Assume that a person skiing high in the mountains at an altitude of h = 15100 ft takes in the same volume of air with each breath as she does while walking at sea level. determine the ratio of the mass of oxygen inhaled for each breath at this high altitude compared to that at sea level. assume that the air composition (i.e. % of air that is oxygen) is the same at sea level as it is at 15100 ft.