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Physics > Forces > Flashcards

Forces Flashcards

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1
Q

Kg =

A

Kilogram

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2
Q

m =

A

Metre, used in distance

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3
Q

m/s =

A

metre/second

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4
Q

m/s**2 =

A

metre/second (squared), used in acceleration

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5
Q

N =

A

Newton, used in force

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6
Q

s =

A

seconds, used in time

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7
Q

N/kg =

A

Newton/Kilogram, used in gravitational field strength

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8
Q

Nm =

A

Newton metre, used in torque

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9
Q

Kg m/s =

A

Kilogram m/s (momentum)

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10
Q

Different types of forces

A

Gravitational, weight, friction, electrostatic, air resistance (drag), tension (force in a spring), up thrust, lift, thrust

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11
Q

What is a vector quantity?

A

Vector quantities refer to the physical quantities characterized by the presence of both magnitude as well as direction

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12
Q

What is a scalar quantity?

A

Scalars are quantities that are fully described by a magnitude (or numerical value) alone.

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13
Q

Stopping distance is made up of…

A

thinking distance + breaking distance

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14
Q

What affects the stopping distance in a vehicle?

A

Speed, mass of the vehicle, road condition, reaction time

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15
Q

What is terminal velocity?

A

The speed that a falling object reaches when the resistance and acceleration balance out, so no more speed can be gained.

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16
Q

What happens when the forces on an object are balanced?

A

It will remain stationary, or it will move at the same speed in the same direction

17
Q

What happens when the forces on an object are unbalanced?

A

It will either speed up, change shape or direction

18
Q

What is Hooke’s Law?

A

Hooke’s Law states that force is directly proportional to extension

19
Q

What is Netwon’s Third Law?

A

Every action has an EQUAL and OPPOSITE reaction

20
Q

What is Elastic behaviour?

A

Elastic Behaviour is the ability of a material to recover to its original shape after the force is removed

Physics (8 decks)

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