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Physics-Forces > Lesson 1-non-contact & Contact > Flashcards

Lesson 1-non-contact & Contact Flashcards

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1
Q

What is the definition of force?

A

A push or pull that acts on an object due to its interaction with another object, measured in Newtons.

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2
Q

True or False: Forces can only be exerted by living organisms.

A

False. Forces can be exerted by both living organisms and non-living objects.

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3
Q

Which of the following is a contact force?

A

Friction

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4
Q

What is the SI unit of force?

A

Newton (N)

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5
Q

What is the formula to calculate force?

A

Force = mass x acceleration

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6
Q

What is the force acting against the motion of an object through a fluid?

A

Drag force

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7
Q

What is the force that opposes the relative motion or tendency of such motion of two surfaces in contact?

A

Friction force

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8
Q

Which type of force occurs between two objects without any physical contact?

A

Field force

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9
Q

What is the force that pulls objects towards the center of the Earth?

A

Gravity

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10
Q

Which force allows a car to accelerate when the gas pedal is pressed?

A

Engine force

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11
Q

Which force is responsible for the tension in a rope when it is pulled?

A

Tension force

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12
Q

What is the force that a surface exerts on an object resting on it?

A

Normal force

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13
Q

What is the force that opposes the motion of an object sliding on a surface?

A

Sliding friction force

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14
Q

What is the force that opposes the motion of an object rolling on a surface?

A

Rolling friction force

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15
Q

What is the force that resists the motion of an object through a fluid?

A

Viscous drag force

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16
Q

Which force is responsible for the buoyancy of objects in a fluid?

A

Buoyant force

17
Q

What is the force that allows a rocket to lift off from the ground?

A

Thrust force

18
Q

Which force is generated by an object moving through a fluid?

A

Lift force

19
Q

What is the force that opposes the motion of an object sliding down a slope?

A

Sliding friction force

20
Q

What is the force that opposes the motion of an object moving through a fluid?

A

Drag force

21
Q

What is a Vector Quantity

A

A quantity that has both magnitude (size) and direction.

22
Q

What are contact forces?

A

Forces that require the two objects to be physically touching.

23
Q

What are Non-Contact forces?

A

Forces that can act through empty space without the objects needing to touch.

24
Q

Examples of contact forces

A

Air resistance, Friction, Tension

25
Q

Examples of non-contact forces

A

Gravitational Force, Magnetic Force, Electrostatic Force.

Physics-Forces (4 decks)

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