Vocabulary
First Law
Second Law
Third Law
Wild Card
100
This is an object's resistance to a change in motion.
What is inertia?
100
This is what an object can be doing at equilibrium.
What is not moving and moving at a constant velocity?
100
These are the two variables in Newton's Second Law that have an inversely proportional relationship.
What are mass and acceleration?
100
A cannon fires a cannonball across a field. This object experiences the biggest force.
What is they both experience the same force?
First Hand ($100):
Which object experiences the greater acceleration and why?
100
This is Mr Janzen's favorite pie for Thanksgiving and Christmas.
What is apple pie?
200
This describes an object at dynamic equilibrium.
What is constant motion?
First Hand ($100):
What characterizes static equilibrium?
200
This is the equation of equilibrium for a cat lying on the floor.
What is Fnet = W - N = 0?
or
Fnet = N - W = 0
200
The most acceleration occurs at this position.
What is Position A?
First Hand ($300):
Why?
200
This is the reaction force to the weight of a trumpet.
What is the trumpet pulling the Earth up?
Five-Second Competition ($100):
Best trumpet impression
200
This rope has a greater tension.
What is T2?
300
This is the force that always resists motion.
What is friction?
First Hand ($100):
What are the two types of friction?
300
This is the force of air resistance on a 15kg bowling ball when it reaches a terminal velocity of 130m/s.
What is 150N?
300
This is the equation of motion for a skydiver falling (before terminal velocity).
What is Fnet = W - Fdrag = ma
or
Fnet = Fdrag - W = ma
300
Two ice skaters on extremely slick ice push against each other. They both slide away from each other, but one of them slides away faster. This is why.
What is the faster skater has less mass?
300
On Earth, the mass of an apple is 0.5 kg. This is the normal force acting on it if it is resting on a horizontal table on Jupiter. (Assume gJupiter = 50 m/s2)
What is 25 N?
First Hand ($100):
What is the apple's mass on Jupiter?
400
This is the name given to the two forces acting on opposite objects that don't cancel out.
What is an action-reaction pair?
400
This string experiences the most amount of tension when the system is pulled to the right.
What is String C?
First Hand ($100):
What is the acceleration if m=1kg and F=6N (and no friction)?
400
The table has a coefficient of friction of μk=0.2. This is the acceleration of this system.
What is 2 m/s2?
400
In a game of tug-of-war between Mr Janzen and Beckett, Mr Janzen easily pulls Beckett across the floor. This is the biggest force present in this system (why Mr Janzen was able to win).
What is Mr Janzen pushing against the ground?
First Hand ($100):
What is the reaction force to this action?
400
A canoe is paddling across a flowing river. This is the resultant speed of the canoe if it is paddling west with a speed of 15 m/s and the river is flowing south with a speed of 20 m/s.
What is 25 m/s?
First Hand ($100):
What direction is the canoe actually traveling?
500
A small feather and a large bowling ball are dropped off of a cliff. The feather reaches equilibrium first. This is why.
What is because the feather has a very small weight, so it only needs a little air resistance to reach equilibrium, while the bowling ball has lots of weight, so it needs lots of air resistance to reach equilibrium.
First Hand ($100):
What is this top speed while falling called?
500
The table has a coefficient of static friction of 0.5 and a coefficient of kinetic friction of 0.2. This is the frictional force acting on the 11kg box.
What is 50N?
First Hand ($100):
What is the net force on the entire system?
500
This is the coefficient of kinetic friction if a 3kg box is being pushed with a horizontal force of 15N and is accelerating forward at a rate of 4 m/s2.
What is μk=0.1?
500
This is why the Moon orbits the Earth and not the other way around.
What is because the Moon has less mass, so even though the Moon and Earth experience the same force, the Moon is accelerated more, causing it to move in a circular path while the Earth does not move because of the Moon?
500
This rope has a greater tension assuming m1 is smaller than m3.
What is the right rope?