You pull a 48 kg child in a wagon by pulling with a force of 187 N along the handle which is at 12 degrees above the horizontal. If the wagon moves at a constant velocity of 3.8 m/s, what is the coefficient of kinetic friction between the
wheels and the sidewalk?

Determine the critical height h of the water level that causes the concrete gravity dam to be on the verge of tipping over due to water pressure. the density of concrete is ρc = 2.40 mg/m3. suppose that hd = 38 m. hint: work the problem using a 1-m width of the dam.

This is the substance(s) formed in a chemical reaction.

The force needed to overcome static friction is usually less than that needed to overcome kinetic friction.true or false?