Newton's Laws of Inertia
An object at rest remains at rest unless acted upon by an unbalanced force. An object in motion remains in motion unless acted upon by an unbalanced force.
An Object at Rest
Explanation: The dog remains at rest until it decides to move or is commanded to move. This in simple terms would be the unbalance force.
An Object in Motion
Explanation: The dogs remain in motion until some unbalance force acts upon them such as the friction between the sled and the snow tires the dogs out and they need to rest.
Newton's Second Law of Inertia:
Force equals mass times accelerations or F = ma ( F equals force, m equals mass of the object and a equals the acceleration of the object.)
Explanation: The force produced from the burning of the rocket propellant accelerates the mass of the rocket creating thrust. The greater the thrust the greater the force!
Newton's Third Law of Inertia:
For every action there is an equal and opposite reaction.
Explanation: When the two sword fencers collided as they attack each other they repel backwards with an equal and opposite force.
