The first law of motion, also known as the law of inertia, states that an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force.
The formula for calculating force using Newton's second law is F=ma, where F is the force, m is the mass of the object, and a is the acceleration.
One example would be a car traveling at a constant speed of 60 km/h. If the car has a mass of 1000 kg, what is the force needed to keep it moving at this speed? Using the formula F=ma, we can calculate that the force needed is 60,000 N.
Newton's third law states that for every action, there is an equal and opposite reaction. This means that when one object exerts a force on another object, the second object will exert an equal and opposite force back on the first object.
Understanding Newton's laws of motion is crucial in understanding the fundamental principles of physics and how objects behave in motion. These laws are used to explain and predict the motion of objects, and are the basis for many engineering and technological advancements.