Professor Armendaria Fall 2017 PHY202Test 3 show all of your math steps, answers

Question

Professor Armendaria Fall 2017 PHY202Test 3 show all of your math steps, answers without work recelive aero credit To get credit you must Draw a box around your final answers See both sides of pagels) building throws aug ball straight up withlawof kinete eere 1) A person on a maximum height above the sround the ball will go? a) Use the conservation of energy to find the b) Use conservation of energy to find the speed at which the ball hits the ground? 2)A75skier starting from rest is pushed and then skis all the way down a hill 1000m long with 30 incline; friction makes the skier coast at a fixed speed: a) Draw a force vector diagram showing all the forces and their components on a coordinate system b) What is the coe of kinetic friction? -HAN Use the work-energy theorem and Newtons c) Calculate the work done by the conservative force: 2 law to solve the following d) The work done by the non-conservative force: e) The work done by friction: f) The change in Potential energy igh

Explanation / Answer

Applyinh conservation of energy

Kenictic energy provided= potential energy attained

400= mgh

h= 400/(1x 9.8) = 40.816 m

Total height above ground= 100+ 40.816 = 140.816 m

(B) now total potential energy stored by object= 140.816 x 9.8 x 1 J

Now kinetic energy = potential energy

0.5 m v ^2= 140.816x 9.8

V= 52.5356 m/s

According to chegg guidelines we can solve one problem at a time so please reattach your other problems separately..

Please rate the answer if found helpful..goodluck..

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