Recent content by WannabeEngineer

Problem Statement: 4*10^5 Joules of work is required to reduce a car's velocity from 30m/s to 15m/s. What is the car's mass? Relevant equations: Ke=.5*m*v^2 The attempt at a solution: V1 = 30m/s V2 = 15m/s M = mass of car .5*M*V1^2 - 4*10^5J = .5*M*V2^2 450M - 4*10^5J = 112.5M -4*10^2 =...