Force and Laws of Motion

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Force is a push, hit, or pull that can change the state of motion of an object. Though we cannot see, taste, or feel force directly, we can always observe its effects. Force can change the speed of an…

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Balanced forces are equal forces acting on an object in opposite directions that cancel each other out. They do not change the state of rest or motion of an object. Example: A wooden block pulled by e…

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Unbalanced forces occur when the net force acting on an object is not zero. They cause a change in the state of motion of an object - either changing its speed, direction, or both. An unbalanced force…

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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 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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When the bus stops suddenly, the bus and the passenger's feet in contact with the floor come to rest due to brakes. However, the upper part of the passenger's body continues to move forward due to ine…

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Momentum is the product of an object's mass and velocity. 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.