The Nature of Force
Friction & Gravity
Newtonian Mechanics
Momentum
Free Fall & Circular Motion
100
What do we call a push or pull on an object?
a Force
100
Friction is a force that always opposes.....?
motion
100
What do you call an object's resistance to change its current state of motion?
Inertia
100
Sir Isaac Newton called momentum the "quantity of...."
motion
100
Acceleration due to gravity (on Earth) is...
9.8 m/s/s
200
What is the SI unit of measurement for force?
the Newton (N)
200
What are 2 factors that affect the force of friction?
(must get both correct for credit)
1. The surfaces involved (interacting)
2. The pressure between the surfaces
200
Which of Newtons Laws best explains why one should wear a seat belt while riding in an automobile?
Newton's 1st Law of Motion
200
What is the equation & SI unit of measurement for momentum?
(you must get both correct for credit)
p = m * v
Kg*m/s
200
What do we call it when the only force acting on an object is gravity?
Free Fall
300
1 Newton = ?
(units that make up a Newton)
1 kg * m/s/s
300
Which of the following terms is dependent upon gravity?
Mass or weight
Weight
300
Netwon's 3rd Law of Motion can best be described as the Law of ....
Action and Reaction (Pairs)
300
What are the 2 types of collision?
Elastic and inelastic collisions...or sticky and non-sticky collisions.
300
What is centripetal force?
An inward seeking force that causes objects to move in a circular motion.
400
You are pulling on your dog's leash with 30 N of force to the right. Your dog is pulling on the leash with 25 N of force to the left. What is the net force?
5 N of force to the right
400
Identify all 4 types of friction.
Sliding, Rolling, Fluid, Static
400
Write the equation you would use if you were using Newton's 2nd Law to solve for the mass of an object.
m = f / a
400
The Law of Conservation of Momentum basically says that....
Total momentum before a collision = the total momentum after the collision.
400
What is the centripetal force that keeps Earth and Mars moving around the sun?
Gravity
500
What is the net force?6 N Upward
500
What are the 2 factors that affect the gravitational force between objects?
(must have both correct for credit)
1. Mass (of the objects)
2. Distance (between the objects)
500
Draw a simple graph (with trend-line) that represents the relationship between mass and acceleration (according to Newton's 2nd Law).
See board for answer.500
What is the momentum of a 500 g object that is moving with a velocity of 50 m/s north?
25 Kg * m/s north
500
Draw on your boards: the direction an object would move if the centripetal force was removed right as the clockwise circular motion of the object reached the "12 o'clock position."
See board for answer.