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zA Level Maths > Chapter 10 Force And Motion - Year 1 > Flashcards

Chapter 10 Force And Motion - Year 1 Flashcards

1
Q

Describe a displacement time graph?

A

Time is on the x axis
Displacement is on the y axis
A horizontal line represents that the particle is stationary
The gradient represents the velocity
A downwards sloping line represents the particle traveling back towards the starting point
A curved line represents acceleration or deceleration

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2
Q

Average velocity =

A

Distance from the starting point / time taken

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3
Q

Average speed =

A

Total distance traveled / time taken

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4
Q

Describe a velocity time graph

A

Time is on the x axis
Velocity is on the y axis
A horizontal line indicates that the particle is moving at a constant velocity
The gradient represents the acceleration
A downwards sloping line represent that the particle is slowing down at a constant rate
The area under the graph represents the displacement

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5
Q

What needs to be true for suvat equations to be used?

A

CONSTANT ACCELERATION

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6
Q

What is the first constant acceleration suvat equation?

A

v=u+at

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7
Q

What is the second constant acceleration suvat equation?

A

s=ut+1/2at^2

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8
Q

What is the third constant acceleration suvat equation?

A

s=vt-1/2at^2

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9
Q

What is the forth constant acceleration suvat equation?

A

v^2=u^2+2as

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10
Q

What is the fith constant acceleration suvat equation?

A

s=1/2(u+v)t

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11
Q

What is the value of gravity?

A

9.8 ms^-2

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12
Q

If a ball is falling what is it’s acceleration?

A

-9.8ms^2

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13
Q

Which force acts upwards?

A

R (reaction force)

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14
Q

Which force acts downwards?

A

W (weight)

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15
Q

What force acts to the right?

A

P (pull)

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16
Q

Which force acts to the left?

A

F (friction)

17
Q

What is newtons first law of motion?

A

An object at rest will stay at rest and an object with constant velocity will remain at the velocity unless an unbalanced force acts on the object

18
Q

What is a easy way to remember newtons first law?

A

If the object isn’t accelerating the forces are balanced in every direction

19
Q

What is newtons second law of motion?

A

F=ma
(Where f and a act in the same direction)

20
Q

Weight =

A

W=mg

21
Q

What is true if a vector is parallel to the j vector?

A

It will have no i component

22
Q

What is true if a vector is parallel to the i vector?

A

It will have no j component

23
Q

What does F stand for?

A

Resultant force / force

24
Q

What can you do if the connected system involves the motion of more than one particle?

A

You can consider the particles separately

25
Q

What can you do all parts of the connected system are moving in a straight line?

A

You can treat the whole system as a single particle

26
Q

What is tention?

A

A pulling force (arrows some away from the particle)

27
Q

What is thrust/compression?

A

A pushing force (arrow goes into the particle)

28
Q

What is newtons third law?

A

For every action there is an equal and opposite reaction

29
Q

1KN =

A

1000N

30
Q

1 tonne =?

A

1000kg

31
Q

When drawing a diagram what force do people often forget?

A

Tention

32
Q

What 2 things often trick people?

A

Changes to the questions (part b uses slightly different to part a)

It states use 10m/s^2 as gravity

33
Q

What is another name for a pulley?

A

A peg

34
Q

Why can’t you treat particles on a pulley as a single particle?

A

They are moving in different directions

35
Q

In terms of a pulley system what does smooth and light mean?

A

The tension will be equal

36
Q

What do you need to know if you are asked to calculate the force the string exerts on the pulley?

A

The overall force on the pulley is the resultant of the two tensions

37
Q

Tension or thrust must be going in which direction?

A

Away from the body

zA Level Maths (46 decks)

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