Force and Laws of Motion

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Force is a push, pull, or hit that can change the state of motion or shape of an object. We experience force through muscular effort when we push, pull, or hit objects. Though we cannot see force dire…

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Balanced forces are equal forces acting on an object in opposite directions. They do not change the state of rest or motion of an object. Example: A wooden block pulled by equal forces from both sides…

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Unbalanced forces are forces that are not equal in magnitude when acting on an object. They cause a change in the state of motion of an object - either making it start moving, stop moving, or change i…

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An object remains in a state of rest or of uniform motion in a straight line unless compelled to change that state by an applied unbalanced force. This law is also known as the Law of Inertia.

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Inertia is the natural tendency of an object to resist a change in its state of motion or rest. The mass of an object is a measure of its inertia. Heavier objects have more inertia and require greater…

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Due to inertia of motion. When the bus stops suddenly, the bus and the floor come to rest, but passengers' bodies tend to continue moving forward due to inertia. This causes them to jerk forward. Safe…

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Momentum is the product of mass and velocity of an object. Formula: p = mv, where p = momentum, m = mass, v = velocity. SI unit: kg⋅m⋅s⁻¹. Momentum has both magnitude and direction (same as velocity).

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The rate of change of momentum of an object is proportional to the applied unbalanced force in the direction of the force. Mathematically: F = ma, where F = force, m = mass, a = acceleration.