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Simple machines are basic mechanical devices that reduce the amount of force needed to do work. They work by either changing the direction of the force applied or increasing the distance over which the force is applied, making tasks easier. In physics, understanding how these machines work helps explain fundamental concepts like force, work, and energy.
Electricity and magnetism form one of the most essential domains in physics, with direct applications in medical equipment, diagnostics, and daily nursing practice. Understanding the behavior of electric charges, current, voltage, resistance, and magnetic fields helps explain how devices such as ECG machines, defibrillators, MRI scanners, and IV pumps operate. This section offers a beginner-friendly foundation in core topics including charge, current, voltage, Ohm’s Law, electric circuits, and magnetism basics.
Momentum isn’t just for car crashes. It’s about how mass and velocity combine to create motion, and how that motion is transferred or resisted during impacts. In healthcare, momentum helps us understand the impact of a fall, how equipment stops, or how patients move during transfers.
Work, energy, and power are foundational concepts in physics and everyday healthcare. Whether it’s lifting a patient, adjusting bed height, or understanding how fast a machine delivers care, these principles describe how physical effort is applied, stored, or transferred. This topic explains how forces do work, how energy is stored or converted, and how power measures the rate of doing work.
Forces are the hidden agents behind every movement — whether it’s a caregiver lifting a patient, a nurse applying CPR, or a wheelchair being pushed down a hallway. In physics, force is more than just muscle. It has direction, size, and measurable effects. In clinical practice, understanding how forces interact helps prevent falls, reduce strain injuries, and promote safe patient handling.
Introduction Motion is at the heart of physics. It describes how objects move, change position, and respond to forces — whether it's a patient walking down a hallway or an ambulance accelerating to a scene. Kinematics is the part of physics that focuses on describing how things move, not necessarily why they move. To grasp this topic, we must understand quantities like distance, displacement, speed, velocity, and acceleration, and learn how to calculate or represent them using formulas and motion graphs.
In physics, everything begins with measurement. Whether tracking motion, applying force, or understanding energy, nothing can be described, calculated, or communicated correctly without using the right units. Units give meaning to numbers and allow for accurate comparisons, calculations, and scientific discussion.
