Law 1
This is another name often given to Newton's First Law of Motion.
What is the law of inertia?
This famous equation represents Newton's Second Law, stating that force equals mass times acceleration (F = ma).
What is F = ma (or Force equals mass times acceleration)?
This famous phrase completes Newton's Third Law: "For every action, there is an equal and opposite..."
What is a reaction?
You leave a textbook on a desk, and it is still there the next morning.
What is Newton's First Law (or Inertia)?
Identifying Laws:
You jump backward off a small floating boat onto the dock, and the boat drifts out into the water.
What is Newton's Third Law?
This property of matter is an object's natural tendency to resist any change in its state of motion.
What is inertia?
According to Newton's Second Law, acceleration depends directly on the net force and inversely on this measure of matter.
What is mass?
Because of this law, when you jump up into the air, the Earth is pushed downward with the exact same amount of force.
What is Newton's third law of motion?
It is much easier to push an empty shopping cart than a cart loaded with heavy groceries.
What is Newton's Second Law?
If the net force acting on an object is zero, this component of Newton's Second Law must also be zero.
What is acceleration?
What is acceleration?
According to the first law, an object at rest stays at rest, and an object in motion stays in motion at a constant speed and in a straight line, unless acted upon by this type of force.
What is an unbalanced force (or an outside/net force)?
This is the force needed to accelerate a 20 kg object at a rate of 4 m/s².
What is 80 Newtons (80 N)?
This is another common two-word name used to describe Newton's Third Law.
What is the action-reaction law?
Passengers lurch forward in a bus when the driver slams on the brakes.
What is Newton's First Law?
Identifying Laws:
A hockey puck keeps sliding across the ice at a constant speed until friction or the wall stops it.
What is Newton's First Law?
When a fast-moving car abruptly stops and you lurch forward, it is because your body wants to keep doing this due to inertia.
What is stay in motion?
It is much harder to push a full grocery cart than an empty one because the full cart has more of this, requiring more force to accelerate.
What is mass (or inertia)?
Action and reaction forces never cancel each other out to create zero net force because they always act on these.
What are different objects?
When hit with the exact same force, a lightweight tennis ball accelerates much faster than a heavy medicine ball.
What is Newton's Second Law?
Swimming moves you forward because you push the water in this direction.
What is backward?
This is the only factor that directly affects the amount of inertia an object possesses.
What is mass?
If an object has a mass of 10 kg and experiences a force of 50 N, this is its acceleration.
What is 5 m/s²?
When a swimmer propels themselves through the water, this is the direction the swimmer pushes the water versus the direction they move.
What is backward (to move forward)?
A hammer strikes a nail with 50 N of force, meaning the nail strikes the hammer back with 50 N of force.
What is Newton's Third Law?
When you jump into the air, this is what pushes you upward.
What is the ground?