https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:forces/x0e04e0cb682fb793:newton-s-nd-law-of-motion/v/newtons-second-law 2025-07-01T10:10:08.145512912Z Newton's second law If the forces on an object are unbalanced (the net force is not zero), the object will accelerate. How much the object accelerates depends on two factors: the strength of the net force, and the mass of the object. We can conduct an experiment to determine how acceleration depends on these two factors separately. If we keep the object's mass constant and increase the net force, we find that the object accelerates more. If we keep the net force constant and increase the object's mass, we find that the object accelerates less. Mahesh Shenoy video https://cdn.kastatic.org/ka_thumbnails_cache/6addfd09-2e8d-4bf9-94de-e47adc97ad78_1280_720_base.png Newton's second law If the forces on an object are unbalanced (the net force is not zero), the object will accelerate. How much the object accelerates depends on two factors: the strength of the net force, and the mass of the object. We can conduct an experiment to determine how acceleration depends on these two factors separately. If we keep the object's mass constant and increase the net force, we find that the object accelerates more. If we keep the net force constant and increase the object's mass, we find that the object accelerates less. https://cdn.kastatic.org/ka-youtube-converted/l_rw0RfS5x4.mp4/l_rw0RfS5x4.mp4 557 Newton's Second Law of Motion https://www.khanacademy.org/science/in-in-class9th-physics-india/in-in-force-laws-of-motion/in-in-newtons-second-law-inertia/v/finding-force-newtons-second-law-solved-example 2021-04-06T14:32:18Z Finding force - Newton's second law (Solved example) Let's solve some examples of Newton's second law of motion. Given various details of motion, we will see how to calculate the force on a body (using the second law of motion formula F = ma). Mahesh Shenoy video https://cdn.kastatic.org/googleusercontent/V51jg6ZellfsctgLveVeoTvz9kNz2UHNawAW5ZLgJtASbc9ItnSJCFc9T4Km88tWCF5jaC-va7N7P6zo5TsG6aHeag Finding force - Newton's second law (Solved example) Let's solve some examples of Newton's second law of motion. Given various details of motion, we will see how to calculate the force on a body (using the second law of motion formula F = ma). https://cdn.kastatic.org/ka-youtube-converted/A-0EWBCxikg.mp4/A-0EWBCxikg.mp4 712 Newton's Second Law of Motion https://www.khanacademy.org/science/ap-college-physics-1/xf557a762645cccc5:force-and-translational-dynamics/xf557a762645cccc5:forces-and-acceleration/e/newton-s-second-law 2026-04-07T22:59:30.107127435Z Newton's second law Practice applying Newton's second law to symbolically solve for mass, acceleration, and force magnitude.  Sean Boston exercise https://www.khanacademy.org/science/ms-physics/x1baed5db7c1bb50b:motion-and-forces/x1baed5db7c1bb50b:connecting-motion-and-forces/e/apply-forces-and-acceleration 2026-04-30T07:30:36.209464894Z Apply: Connecting motion and forces Apply your understanding of forces and acceleration in this set of free, standards-aligned practice questions. Khan Academy exercise