# AP 物理典型习题解析（第一波）满满的干货来袭

AP physics 典型习题解析之二——滑轮问题

1. 当滑轮质量可以忽略的时候：

2. 滑轮质量不能忽略：

AP physics 典型习题解析之一——空气阻力问题

A small body of mass m located near theEarth’s surface falls from rest in the Earth's gravitational field. Acting onthe body is a resistive force of magnitude kmv, where k is a constant and v isthe speed of the body.

Find the expression for the speed v as afunction of time t.