Show:
Vocabulary
Forces
Friction
Newton's Laws
Gravity
100
A push or pull on an object
What is force
100
The force of gravity acting on an object is its:
What is weight
100
Friction resists motion between objects that ________.
What is surfaces in contact or touching each other.
100
Which of Newton's laws tells us that resting objects stay at rest unless acted on by an outside force?
What is Newton's first law
100
The force that objects exert on each other because of their mass
What is gravity?
200
The sum of all the forces acting on an object
What is net force
200
What is the amount of matter in an object?
What is mass?
200
This causes a falling object to reach terminal velocity?
What is when air resistance and gravity are balanced?
200
The equation that sums up Newton's second law:
What is F = M * A
200
This changes when you visit other planets?
What is your weight?
300
The force that resists the motion of objects that touch as they pass
What is friction
300
What happens when an unbalanced force acts on an object?
What is the object accelerates or moves.
300
This is produced when friction occurs between surfaces in contact.
What is heat?
300
According to Newton's second law, this is the only way to double an object's acceleration if you cannot alter its mass.
What is apply double the force
300
The force of gravity between two objects depends on the __________ of the objects and the ________ between the objects?
What is mass and distance?
400
The tendency of an object to resist change in its motion
What is inertia
400
This force keeps objects moving in a circle
What is centripetal force
400
This would increase the friction between a table and the floor?
What is place heavier objects on the table?
400
Briefly summarize Newton's Third Law
What is for every action there is an equal and opposite reaction. (accept suitable answers)
400
What happens to your weight as you move away from Earth, and why?
What is it decreases because gravity decreases.
500
Friction due to air
What is air resistance?
500
The two forces acting on a falling object are_____ and _____.
What is gravity and air resistance
500
This should be done to reduce the air resistance of an object?
What is decrease the surface area and decrease the speed?
500
According to Newton's second law, the acceleration of an object equals the net force acting on the object divided by what?
What is its mass
500
Which universal force is most effective over long distances?
What is gravitational force