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Surface Action
2nd Law
Gravity
More g, 3rd Law, and Curves
Momentum
100
Force that opposes motions between two surfaces that touch.
What is friction?
100
The formula used in Newton's 2nd Law.
What is F=ma?
100
If it weren't for this, all objects would fall to Earth at exactly the same rate.
What is air resistance?
100
If you take your mass and multiply it by 9.8 m/s/s, you'll get this.
What is your weight in Newtons?
100
The reason a moving truck has more momentum than a bicycle moving at the same speed.
What is the truck has more mass?
200
Type of friction between two surfaces sliding past each other.
What is sliding?
200
What are the three variables in Newton's 2nd Law?
What are force, mass, and acceleration?
200
Two factors that determine the pull of gravity between objects.
What are the masses and the distance between them?
200
This refers to anything that is thrown or shot.
What is a projectile?
200
The reason a bullet fired from a rifle has more momentum than a marble thrown by a friend.
What is the bullet has more velocity?
300
Type of friction between a rolling surface and the object it rolls on.
What is rolling friction?
300
The unit for mass in Newton's 2nd law.
What is kilogram?
300
This is the acceleration of an apple when it falls from a tree limb.
What is 9.8 m/s/s?
300
The difference in the amount of time it takes for a ball that is thrown and a ball that is dropped, from the same height, to hit the Earth.
What is no time? They will hit at the same time.
300
The symbol for momentum in the formula.
What is p?
400
Friction between two surfaces that are not moving past each other.
What is static?
400
The unit for force in Newton's 2nd law?
What is Newton?
400
Of the four basic forces, this is gravity's rank in power.
What is 4th?
400
This is the force that keeps things moving in a curved path.
What is centripetal force?
400
The momentum of a sprinter whose mass is 80 kg and whose velocity is 10 m/s.
What is 80 kg-m/s?
500
Areas where "surface bumpers" stick together, the source of friction.
What are microwelds?
500
The force when a 5 kg rock falls down a hill at 2 m/s/s.
What is 10 Newtons?
500
When a falling object has an acceleration of 0 m/s/s, it has reached this.
What is terminal velocity?
500
This is Newton's 3rd Law of Motion.
What is "to every action force there is an equal and opposite reaction force"?
500
This is The Law of Conservation of Momentum.
What is "Momentum is not lost or gained in a collision, it is only transferred from one object to another"?