While competing in the long jump, a person leaps over a smooth horizontal sand surface. She lands on the surface with speed vf = 8.75 m/s at an angle θ = 31.5° below horizontal. Assume that the person moves without air resistance. Use a Cartesian coordinate system with the origin at her final position. The positive x-axis is directed from her initial to her final position, and the positive y-axis is directed vertically upwards.

The us government wants to allocate billions of dollars in the next 10 years to assure our future energy security. the funds will be spread among a variety of possible energy resources. where do you think the government should put the greatest support: solar energy, wind energy, clean coal, oil exploration, gas exploration, or a combination of sources? are there other efforts that should be explored? support your position with cited information for both questions.

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

An object's buoyant force and weight mean the same thing. a. trueb. false