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Physics 201 Homework - PCC

Physics 201 Homework 5 Feb 6, (non-conservative) force propelling a 1500-kilogram car up a 106joulesroad does 106joules of work on the car. The car starts from rest at sea leveland has a speed of m/s at an altitude of 200 meters above sea level. Obtainthe work done on the car by the combined forces of friction and air resistance,both of which are non-conservative propelling force has the effect of increasing the energy level of the car. Thisenergy goes three places: kinetic energy (or speed), potential energy (or altitude),and some is lost to the nonconservative friction. We know the energy going inand we can calculate the amount that goes into kinetic and potential is left must have been lost to the non-conservative forces.

She pushes in a direction 29.0 below the horizontal. A 48.0-newton frictional force opposes the motion of the cart. (a) What is the magnitude of the force that the shopper exerts? Determine the work done by (b) the pushing force, (c) the frictional force, and (d) the gravitational force.

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