First Law
State Newton's First Law
An object at rest will stay at rest. and an object in motion will remain in motion unless acted on by an unbalanced force.
State Newton's Second Law
F = Mass x Acceleration
State Newton's Third Law
Every action has an equal and opposite reaction.
You must have unbalanced forces to have motion.
True
Chris and Bradley are arm wrestling. Chris wins the battle using 32N of force. Bradley only used 12N of force. This is the net force of the match.
20 N
Newton' First Law is also called this
The Law of Inertia
The more mass an object has, the more of this is needed to change the object's motion.
Force
When air rushes out of a balloon, the balloon moves in the opposite direction. Explain why.
The air is comes out of the balloon backwards and pushes the balloon forward.
In our sliding penny lab, these were the action/reaction forces.
The action force was the sliding of the pennies, and the reaction was the pennies moving away from the target group.
Rachel and Martin were playing tug of war against Liz. Liz was pulling with 14N of force. Rachel was pulling with 20N and Martin was pulling with 24N. This is the net force of the match.
30N
If a bus is traveling and comes to a sudden stop, this is what the people on the bus do.
They move, fall forward
This is the force of a 60kg person traveling at 10 m/s/s.
600N
According to the 3rd law, when you push on a wall, the wall pushes back with this amount of force.
This is the force that causes objects in motion to slow down.
Friction
Mr. Garner pulled on a rope with 35N of force. Mr. Schneider pulled on that same rope in the opposite direction with 30N of force. The rope will move in this direction.
Towards Mr. Garner
Forces occur in pairs.
True
If you increase the force but the mass is the same, this happens to the acceleration.
It increases...speeds up
Use Newton's law to explain how a rocket works.
Hot gases push down and it propels the rocket up.
An object that has a greater mass, will require a great _______ to accelerate.
Force
This is what you call it when you combine all of the forces acting on an object.
Net Force
This is how inertia and mass are related.
The more mass an object has, the more inertia it has.
Tom is pushing a 10kg box across the floor with a force of 30N. This is his acceleration.
3 m/s/s
This is the difference between weight and mass.
Mass is the amount of matter an object has, and weight is the measure of the force of gravity pulling on the object.
Sir Isaac Newton died in this year.
1727
This is the net force when the forces that are acting on an object are equal and opposite.