Newton’s three lawsNewton’s three laws

RaftingRafting

RaftingRafting• Perfect activityPerfect activity• Exciting physical Exciting physical

challengechallenge• Can be dangerous Can be dangerous

sport sport • Using inflatable raft to Using inflatable raft to

navigate a river or navigate a river or other bodies of water.other bodies of water.

First Newton’s LawFirst Newton’s Law

Newton’s first Law Newton’s first Law include:include:

ForceForce: a push or pull: a push or pullNet ForceNet Force: combination of all the : combination of all the

forces on an objectforces on an objectBalancedBalanced: no motion: no motionUnbalancedUnbalanced: motion change : motion change

ExampleExample: I was sitting on an rafting : I was sitting on an rafting boat and it stood still because boat and it stood still because the water was calm. When the the water was calm. When the waves starting faster because it waves starting faster because it was being pushed by the waves. was being pushed by the waves.

Newton’s second lawNewton’s second law• Newton’s second law of Newton’s second law of

motion describes how motion describes how net force, acceleration, net force, acceleration, mass and inertia cause mass and inertia cause and objects motion and objects motion change.change.

• Example: A bigger raft Example: A bigger raft boat that weights more boat that weights more would move slower at would move slower at the velocity of water the velocity of water than lighter boart.than lighter boart.

Newton’s Third LawNewton’s Third Law Forces always act in equal Forces always act in equal

but opposing pairsbut opposing pairs For every action there is an For every action there is an

equal and opposite reactionequal and opposite reaction Example: When your paddle Example: When your paddle

pushes a rock its an action. pushes a rock its an action. And when boat goes And when boat goes opposite direction it’s a opposite direction it’s a reaction.reaction.

The EndThe End

Yuliya VysochynYuliya Vysochyn