This physics video tutorial explains the difference between mass and weight. In addition, it discusses how to calculate the force of gravity acting on an object given its mass and how to calculate the gravitational acceleration given the mass and weight force. Newton's 1st Law of Motion: https://www.youtube.com/watch?v=Fr5EMXZaujc Newton's 2nd Law of Motion: https://www.youtube.com/watch?v=Ee6CHn0MRKE Newton's 3rd Law of Motion: https://www.youtube.com/watch?v=TxhESW6YtOg Mass Vs Weight: https://www.youtube.com/watch?v=LB_WoV071vc Free Body Diagrams: https://www.youtube.com/watch?v=52R61aSWHg0 ____________________________ Normal Force Problems: https://www.youtube.com/watch?v=uyJTwljKSJ4 Elevator Physics Problem: https://www.youtube.com/watch?v=sVVKpRvuNG0 Net Force Physics Problems: https://www.youtube.com/watch?v=tfAJDST3cjo What Is a Normal Force? https://www.youtube.com/watch?v=fRQq4_ry9-Q Static Friction and Kinetic Friction: https://www.youtube.com/watch?v=RIBeeW1DSZg ______________________________ The 4 Fundamental Forces: https://www.youtube.com/watch?v=k1jaDh97Q_g Physics Forces Review: https://www.youtube.com/watch?v=pL2YfC-22Uc Final Exams and Video Playlists: https://www.video-tutor.net/ Full-Length Videos and Worksheets: https://www.patreon.com/MathScienceTutor/collections Physics PDF Worksheets: https://www.video-tutor.net/physics-basic-introduction.html