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Newton's Laws

Biomechanics

QuestionAnswer
Force is defined as... a push or a pulling action applied upon an object
Force is measured in... Newtons or N for short
Inertia is defined as... the resistance of an object to any change in its state of motion
Newton's 1st Law An object in motion stays in motion at the same speed and in the same direction, and an object at rest stays at rest unless acted upon by an external force.
Which of Newton's Laws is known as the Law of Inertia Newton's 1st Law
The quantity of matter in a body regardless of it's volume or of any forces acting on it (measured in kilograms or kg) Mass
Mass is measured in what units? Kilograms or kg
The rate at which an object changes speed (measured in metres per second per second, or m/s²) Acceleration
Acceleration is measured in what units? Metres per second per second, or m/s²
Newton's 2nd Law An object will accelerate when acted upon by an external force. The acceleration of the object is proportional to this force and is in the direction by which the force acts.
How is FORCE calculated? Force (N) = mass (in kg) x acceleration (a) or F=ma
What is this calculation used to measure - F=ma? Force
Newton's 3rd Law For every action there exists an equal and opposite reaction
Gravity is defined as... The force that attracts a body towards the centre of the earth, or towards any other physical body having mass.
A push or pull applied to an object provided by muscular contraction. Muscular Force
The frictional force that air applies against a moving object. Air resistance
The reaction to the force that the body exerts on the ground. Ground reaction force
Created by: annapinder
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