Forces Flashcards
I can identify the forces acting on an object
What is a force?
A force is a push or pull acting upon an object.
True or False: Forces can only be contact forces.
False
Fill in the blank: The unit of force in the International System of Units (SI) is the _____.
Newton
What is the formula for calculating force?
Force = Mass x Acceleration (F = ma)
What type of force opposes the motion of an object?
Frictional force
Multiple choice: Which of the following is NOT a type of force? A) Gravitational B) Electromagnetic C) Thermal D) Frictional
C) Thermal
What is gravitational force?
Gravitational force is the attraction between two masses.
True or False: The greater the mass of an object, the greater the gravitational force acting on it.
True
Fill in the blank: The force that acts at a distance without contact is called _____.
Non-contact force
What is Newton’s first law of motion?
An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.
What is the difference between balanced and unbalanced forces?
Balanced forces do not change an object’s motion, while unbalanced forces do.
Multiple choice: Which law states that for every action, there is an equal and opposite reaction? A) Newton’s First Law B) Newton’s Second Law C) Newton’s Third Law
C) Newton’s Third Law
What is a net force?
The overall force acting on an object when all the individual forces are combined.
True or False: A force can change the shape of an object.
True
What is tension force?
Tension force is the pulling force transmitted through a string, rope, or cable.
Fill in the blank: The force that opposes the motion of an object through a fluid is called _____.
Drag force
What does the term ‘friction’ refer to?
Friction refers to the resistance that one surface or object encounters when moving over another.
Multiple choice: Which type of friction occurs when an object is not moving? A) Static B) Kinetic C) Rolling
A) Static
What is the relationship between mass and weight?
Weight is the force exerted by gravity on an object, calculated as Weight = Mass x Gravitational Acceleration.
True or False: Air resistance is a type of frictional force.
True
What is applied force?
Applied force is a force that is applied to an object by a person or another object.
Fill in the blank: The force that acts to restore an object to its equilibrium position is called _____.
Restoring force
What is centripetal force?
Centripetal force is the force that keeps an object moving in a circular path.
Multiple choice: Which of the following forces is responsible for keeping planets in orbit? A) Gravitational B) Magnetic C) Frictional
A) Gravitational
True or False: Forces can exist in isolation without affecting other forces.
False
