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Measuring Motion What is Force? Gravity Newton’s Laws Misc. 10 Point 20 Points 30 Points 40 Points 50 Points 10 Point 20 Points 30 Points 40 Points 50 Points 30 Points 40 Points 50 Points Friction
This is when an object is changing position.
What is moving?
Distance and time are two of the factors needed to determine this.
What is speed?
A building compared to a moving student.
What is a reference point?
The speed of an object in a particular direction.
What is velocity?
The rate at which velocity changes over time.
What is acceleration?
This is needed to cause an object to start moving.
What is an unbalanced force?
A combination of all forces acting on an object.
What is net force?
Simply a push or pull.
What is a force?
The SI unit for force.
What is newton?
The net force if one dog is tugging a rope 12N to the north and another dog is tugging the rope 10N to the south.
What is 2N north?
A force that opposes motion between two surfaces that are in contact with each other.
What is friction?
Force and the roughness of surfaces.
What are two factors that affect friction?
Car engine parts wearing out due to the lack of oil.
What is harmful friction?
Rolling and sliding are two types of friction that occurs between moving surfaces.
What is kinetic friction?
Force is applied and an object does not move.
What is static friction?
A force of attraction between objects that is due to their masses.
What is gravity?
Discovered that the same unbalance force affected the motions of a falling apple and the moon.
Who is Sir Isaac Newton?
This increases as mass increases.
What is gravitational force?
Gravitational force decreases between objects.
What is as distance increases?
All objects in the universe attract each other through gravitational force. The size of the forces depends on the masses of the objects and the distance between the objects.
What is the Universal Law of Gravitation?
The tendency of objects to resist any change in motion.
What is inertia?
An example of all forces acting in pairs.
What is Newton’s 3 rd Law of Motion?
A sled continuing to slide at a constant velocity.
What is Newton’s 1 st Law of Motion for objects in motion?
The equation that is included in Newton’s 2 nd Law of Motion?
What is F= m * a?
A car stopped at a traffic light.
What is an example of Newton’s 1 st Law of Motion for objects at rest?
A measure of the amount of matter in an object.
What is mass?
A measure of the gravitational force exerted on an object.
What is weight?
m/s (meters per second)
What is the SI unit for speed?
O newtons
What is the measure of balanced forces?
1686
What year did Newton explain the relationship between force and motion?