What is the distance beteen masses and the amount of mass
What are the two factors that determine how strong gravity will be?
100
Inertia
What is force that resists the change in motion?
100
Static and Kinetic Friction
What are the two categories of Friction?
100
When an object changes position over time relative to a reference point.
What is motion?
100
1.Lubricants
2. Decrease Pressure between two surfaces that are in contact with each other.
How do reduce friction?
200
Weight
What is the measure of gravitational force on an object?
200
Refrigerator sliding across tile.
What would exhibit more inertia a Refrigerator sliding across tile or a Refrigerator on rollers?
200
Static, Sliding, Rolling, Fluid
Name the four types of Friction?
200
A reference point is the object that appears to stay in place when compared to the object in motion.
What is a reference point?
200
Net force is the combination of all forces acting on an object.
What is net force?
300
9.8 m/s 2
What is rate that all objects fall to the Earth?
300
Unbalanced Force
Will a balanced force or an unbalanced force be helpful in overcoming inertia?
300
1. Apply more pressure to the two surfaces touching.
2. Make the two surfaces that are touching rougher.
How can Friction be increased?
300
Speed is the distance traveled by a object divided by the time taken to travel that distance.
What is speed?
300
N Newton
What is the SI unit symbol for force?
400
terminal velocity
What occurs when the downward force of gravity equals the upward force of air resistance?
400
Truck going Uphill.
What has more inertia a skater on ice or truck going uphill?
400
A force that opposes motion between two surfaces that are in contact.
What is definition of Friction?
400
Total Distance divided by Total Time
How do you calculate average speed?
400
Projectile Motion
A frog hopping or an arrow shot by an Archer are examples of what type of motion?
500
137.2 m/s velocity
An object falls to Earth in 14 seconds. How fast is the object traveling?
500
By applying a stronger unbalanced force that overcomes that objects resistance to movement.
How can you overcome inertia in all objects?
500
Friction causes heat and excessive heat can cause machine parts to wear out more quickly.
Why is friction harmful in machines?
500
Speed is distance divided by time. Velocity is the speed of an object in a specific direction. Velocity must include a reference direction. Example: Airplane Velocity is 600 k/m Hour North.
What is difference between Speed and Velocity?
500
Centripetal Motion
When the Moon orbits the Earth the Moon is attracted to the mass of Earth. What type motion occurs when an object is at a constant speed , but still considered to be accelerating?