Friction that acts on objects that are not moving.
What is static friction?
100
The forces of gravity acts between all objects in the universe. This means that any two objects in the universe, without exception, attract one another.
What is The Law of Universal Gravitation?
100
If one object exerts a force on another object, then the second object exerts a force of equal strength in the opposite direction on the first object is known as which law?
What is Newton's Third Law?
100
Acceleration
What is Acceleration = Net Force / Mass
100
What force makes it less likely for a person to slip on a dry sidewalk as opposed to an icy sidewalk?
What is Friction?
200
Friction that occurs when one solid surfaces glides over another.
What is sliding friction?
200
Why do we not notice the attraction among objects on Earth?
What is "because these forces are small compared to the force of Earth's attraction."
200
For every action, there is an equal but opposite reaction.
What is Newton's Third Law?
200
Momentum
What is Momentum = Mass x Velocity?
200
Which of the following is determined by force of gravity?
Weight, Momentum, Mass or Distance.
What is Mass?
300
Friction that occurs when an object skates over another surface.
What is rolling friction?
300
There are two factors that affect the gravitational attraction or pull between objects. What are the two factors that affect the attraction between objects?
What is mass and distance.
300
Inertia is the tendency of an object to resist a change in motion.
What is Newton's First Law?
300
Use Acceleration (Net Force Equation) to solve for Net Force.
Acceleration = Net Force / Mass.
What is Net Force = Mass x Acceleration?
300
A 50-car frieght train and an 8-car passenger train are stopped on parallel tracks. It is more difficult to move the freight train than the passenger train. What accounts for this fact?
What is inertia?
400
Friction that occurs as objects move through a liquid.
What is fluid friction?
400
If the only force acting on an object is gravity, this is known as what?
What is free fall?
400
Acceleration depends on the object's mass and on the net force acting on the object.
I.E. Acceleration = Net Force/ Mass
What is Newton's Second Law of Motion?
400
Use Momentum = Mass x Velocity to solve for velocity using the same equation.
What is Velocity = Momentum / Mass?
400
Why do slippery fluids such as oil reduce sliding friction?
What is "the fluid keeps the surfaces from making direct contact and thus reduce friction?"
500
The strength of friction depends upon two factors. What are the two factors that determine the strength of friction?
What is how hard the surfaces push together and the type of surfaces invloved?
500
In free fall, an object accelerates. Why?
What is "the force of gravity is an unbalanced force which causes an object to accelerate?"
500
Daily Double! Math Sample Problem: A speedboat pulls a 55kg water skier. The force causes the skier to accelerate at 2.0 meters per second squared. Calculate the net force that causes this acceleration.
Hint: Acceleration = Force Net/Mass
Givens: Mass and Acceleration.
What is 110N?
500
DAILY DOUBLE! If Force = Mass x Acceleration and a 7.3 kg bowling ball accelerates at a rate of 3.7 meters per second squared. What force acts on the bowling ball. CALCULATE.
What is 27.01N?
500
Explain how force, mass, and acceleration are related according to Newton's Second Law of Motion.