https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:forces/x0e04e0cb682fb793:untitled-lesson-144newton-s-first-law-of-motion/v/newtons-first-law 2025-12-18T02:00:41.510401167Z Newton's first law If the forces acting on an object are balanced (the net force is zero), the object will not accelerate. It will remain at rest or moving with constant velocity. If the forces acting on object are unbalanced (the net force is not zero), the object will accelerate. Its speed and/or direction of motion will change. Mahesh Shenoy video https://cdn.kastatic.org/ka_thumbnails_cache/b3419448-c6b7-41eb-a34e-fe3cbbd247d4_1280_720_base.png Newton's first law If the forces acting on an object are balanced (the net force is zero), the object will not accelerate. It will remain at rest or moving with constant velocity. If the forces acting on object are unbalanced (the net force is not zero), the object will accelerate. Its speed and/or direction of motion will change. https://cdn.kastatic.org/ka-youtube-converted/Q0T2zjmvvA0.mp4/Q0T2zjmvvA0.mp4 366 Newton's First Law of Motion https://www.khanacademy.org/science/bmc-grade-9-science/x345505a97fc4a662:laws-of-motion/x345505a97fc4a662:newton-s-laws-of-motion/v/newton-s-first-law-of-motion-in 2024-01-16T04:11:35.384208864Z Newton's first law of motion Let's explore Newton's first law of motion Mahesh Shenoy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Newton's first law of motion Let's explore Newton's first law of motion https://cdn.kastatic.org/ka-youtube-converted/iZz7jaEypjY.mp4/iZz7jaEypjY.mp4 402 Newton's First Law of Motion https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:mass-weight-and-density/x0e04e0cb682fb793:inertial-mass/v/inertia-mass-pk 2025-12-18T02:00:41.510401167Z Inertia & mass Created by Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Inertia & mass Created by Khan Academy https://cdn.kastatic.org/ka-youtube-converted/73htvtB2P1s.mp4/73htvtB2P1s.mp4 418 Newton's First Law of Motion https://www.khanacademy.org/science/in-in-class11th-physics/in-in-class11th-physics-laws-of-motion/in-in-class-11-newtons-first-law-mass-and-inertia/e/newtons-first-law-exercises-ap1 2026-03-25T13:20:47.939559562Z Net force and acceleration exercise Practice using Newton's first law to make conclusions about an object's acceleration or the forces on the object.  April Russell exercise