Lesson 1-non-contact & Contact Flashcards
What is the definition of force?
A push or pull that acts on an object due to its interaction with another object, measured in Newtons.
True or False: Forces can only be exerted by living organisms.
False. Forces can be exerted by both living organisms and non-living objects.
Which of the following is a contact force?
Friction
What is the SI unit of force?
Newton (N)
What is the formula to calculate force?
Force = mass x acceleration
What is the force acting against the motion of an object through a fluid?
Drag force
What is the force that opposes the relative motion or tendency of such motion of two surfaces in contact?
Friction force
Which type of force occurs between two objects without any physical contact?
Field force
What is the force that pulls objects towards the center of the Earth?
Gravity
Which force allows a car to accelerate when the gas pedal is pressed?
Engine force
Which force is responsible for the tension in a rope when it is pulled?
Tension force
What is the force that a surface exerts on an object resting on it?
Normal force
What is the force that opposes the motion of an object sliding on a surface?
Sliding friction force
What is the force that opposes the motion of an object rolling on a surface?
Rolling friction force
What is the force that resists the motion of an object through a fluid?
Viscous drag force