A constant net force of 345 N is applied to slide a heavy stationary couch across the floor. If the force is contact with the couch for 1.5 seconds,
then what is the change in momentum of the couch

Identify two factors that determine the rate of stream erosion

Madison pushes with a 210-n horizontal force on a 24-kg crate of coffee resting on a warehouse floor. the force of friction on the crate is 74 n. what is the acceleration?

The sun’s mass is 2.0×10^ 30 kg, its radius is 7.0×10 5 km, and it has a rotational period of approximately 28 days. if the sun should collapse into a white dwarf of radius 3.5×10 3 km, what would its period be if no mass were ejected and a sphere of uniform density can model the sun both before and after?