A constant force F is pushing a 5 kg mass on a horizontal surface at a constant velocity of 2m/s. The coefficient of friction between the surface and the mass is 0.3. Take g=10m/s^2. If F acts along the direction of motion, the rate at which F is doing work (in watts) is :a)3, b)6, c)10, d)15, e)30 (answer)How do you get this answer? Thanks!

Grace Mathew , 8 Years ago

Grade 11