Recent content by Kararr

Edited, p=fv

Edited: it's power=fv.

Sorry didn't know how to put the dot symbol that's why I put it in parentheses whoops

1. "A car moves along a horizontal road against a resistance of 400 N. What is the greatest speed in kph that the car can reach if the engine has a maximum power of 16.0 kW?"Homework Equations : P= W/change in time P= F x v (dot product) Please help ): [/B]

oh so is frictional force= 20 N? What about the normal force though? Sorry a bit confused

The full problem is: "A 2.0kg box slides down at constant velocity between two identical walls. What is the frictional force exerted on the box by one of the walls?" The answer I got was zero because I equated Normal force (of the wall on the box) at zero. Am I wrong? ): Does the weight of the...