An object slides without friction down an incline and loses height h = 131 m.The incline makes an angle of 35.0 $\circ$ with respect to the horizontal.If the object started with a speed of 45.0 m/s,what will be its final speed in m/s?

Question

Quizplus · Accepted Answer

The final speed can be found using energy conservation. The initial kinetic energy plus the potential energy lost equals the final kinetic energy. The potential energy lost is mgh, where h = 131 m. The initial kinetic energy is (1/2)mv^2, where v = 45.0 m/s. Solving for the final speed gives approximately 67.8 m/s.

An Object Slides Without Friction Down an Incline and Loses ∘\circ∘

An Object Slides Without Friction Down an Incline and Loses $\circ$