PHYS - Newton's Three Laws of Motion
Physics, Newton's law, motion - IBDP | DSE | GCE | IAL | AP Physics
Newton's First Law of Motion
If there is no resultant force on an object, the object will remain at the same state of motion:
Frequently asked example in IGCSE Physics:
Newton's Second Law of Motion
Newton's second law can be explained by the following equation:
F = ma
F = resultant force on an object (N)
m = mass of object (kg)
a = acceleration of object (m/s2)
A crate of mass 5 kg is pushed with 12 N force. The frictional force between the crate and the surface is 8 N. What is the acceleration of the crate?
Resultant force on crate = 12 - 8 = 4 N
a = F / m = 4 / 5 = 0.8 m/s2
Newton's Third Law of Motion
Some examples about Newton's third law:
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