Recent content by lvck

Honestly I am having a hard time figuring out what the initial velocity is.. and the acceleration

Homework Statement 1. A train moving at a speed of 30 m/s slows down to 10m/s in 30s. How far had the train gone before it's speed was reduced from 30m/s to 20 m/s? Homework Equations D= Vi times T + at(squared) divide it by 2 The Attempt at a Solution None yet. Please help me...