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Year 11 Physics Unit 2 > Topic 1 - Forces > Flashcards

Topic 1 - Forces Flashcards

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1
Q

T or F: A scalar value has a direction?

A

False

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2
Q

What does a vector value need?

A

Magnitude and Direction

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3
Q

How is delta represented?

A

With a triangle

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4
Q

What does delta mean?

A

Change in ___

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5
Q

What is the difference between distance and displacement?

A

Distance is total distance travelled, displacement is distance from start

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6
Q

T or F: Displacement is a vector value?

A

True

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7
Q

T or F: Speed uses displacement?

A

False

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8
Q

What is the equation for Velocity?

A

V = s/t (velocity = displacement/time)

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9
Q

What is acceleration?

A

Difference in velocity

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10
Q

How do you calculate acceleration?

A

Final velocity - initial velocity

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11
Q

How many SUVAT equations are there?

A

4

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12
Q

T or F: V = U + AT is a SUVAT Equation?

A

True

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13
Q

What does S stand for in the SUVAT equations?

A

Displacement

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14
Q

What is the symbol for time in SUVAT?

A

T

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15
Q

Manipulate this equation to equal A: V^2 = U^2 + 2AS

A

A = (V^2 - U^2) / 2S

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16
Q

How do you find the velocity at a point for a non-uniform acceleration?

A

Tangent/differentiate

17
Q

For a Displacement x Time graph what does the gradient represent?

A

Velocity

18
Q

T or F: An acceleration x time graph is linear?

A

True

19
Q

How many of Newtons’ laws are there?

A

3

20
Q

What is the Newtons’ 2nd law?

A

Force = mass x acceleration

21
Q

T or F: Newton’s 3rd law is intertia

A

False

22
Q

What is Newton’s 1st law?

A

Inertia

23
Q

What is Newton’s 3rd law about?

A

Equal and Opposite actions.

24
Q

What is Power = too?

A

Mass x Velocity

25
Q

What symbol represents impulse?

A

I

26
Q

What is Impulse equal too?

A

Change in Power

27
Q

What is the expanded equation for Impulse?

A

M x V - M x U

28
Q

What is the rule about conservation of Power?

A

P(before) = P(after)

29
Q

What does work equal?

A

Change in energy

30
Q

What does work measure?

A

Amount of force over a distance

31
Q

What are the 2 equations for work?

A

Force x Displacement
Force x Displacement x Cos()

32
Q

What does potential energy measure?

A

The energy of an object at a certain height

33
Q

What is the equation for Potential Energy?

A

PE = Mass x Gravity x Height

34
Q

T or F: Kinetic energy measures energy at a height?

A

False

35
Q

What does Kinetic Energy measure?

A

Active energy

36
Q

What is the Equation for Kinetic energy?

A

KE = 0.5 x Mass x Velocity^2

37
Q

What is Mechanical energy equal too?

A

KE + PE

Year 11 Physics Unit 2 (2 decks)

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