Recent content by Farnak

Homework Statement This is from Fundamentals of Physics 8th ed, by Halliday and Resnick: A boy is initially seated on the top of a hemispherical ice mound of radius R = 13.8m. He begins to slide down the ice, with a negligible initial speed. Approximate the ice as being frictionless. At what...

Ahhh ok, so I guess I need to learn differential equations if I want to read more, sorry for the calculus stupidity, thanks!

Are you supposed to solve the equation through integration? If so, I think I'm messing up: -kv = m (dv/dt) Integrating both sides (-k/2)v^2 + C = mv But an equation like this gives me a constant value for velocity =( ... where did I mess up?

Hi, new member here ^_^ "A 1000kg boat is traveling at 90km/h when its engine is shut off. The magnitude of the frictional force f_k between boat and water is proportional to the speed v of the boat: f_k = 70v, where v is in meters per second and f_k is in Newtons. Find the time required for...