Ablock of mass m slides along a horizontal surface lubricated with a thick oil which provides a drag force proportional to the square root of velocity: fd=−bv^1/2.
if v=v0 at t=0, determine v as function of time.
determine x as function of time. assume that x=0 at t=0.

Which best represents the law of conservation of mass ?

Two students, each riding bicycles, start from the same apartment building and ride to the same building on campus, but each takes a different route. the first student rides 1100 m due east and then turns due north and travels another 1430 m before arriving at the destination. the second student heads due north for 1930 m and then turns and heads directly toward the destination.at the turning point, how far is the second student from the destination?

Auniform crate c with mass mc is being transported to the left by a forklift with a constant speed v1. what is the magnitude of the angular momentum of the crate about point a, that is, the point of contact between the front tire of the forklift and the ground