Forces Flashcards

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1
Q

What is displacement?

A

Displacement is the two different distances in different directions minus each other

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2
Q

How do you represent constant speed?

A

By doing a straight line without any slopes on top of the bottom line

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3
Q

What is the SI unit for speed?

A

M/s

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4
Q

What is acceleration?

A

Velocity divided by time taken

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5
Q

How do you know what is the greatest positive speed?

A

It depends on where it starts and how far it moves in a certain time

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6
Q

What are examples of scalars?

A

Distance
Time
Speed

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7
Q

What are the examples of vectors?

A

Velocity
Displacement
Acceleration

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8
Q

Non contact forces

A

Gravity
Magnetism
Electromagnetism

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9
Q

Contact forces

A

Push
Pull
Friction

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10
Q

What is Newton’s second law?

A

The acceleration of an object is:
1)Directly proportional to the resultant force of an object

2)Inversely proportional to the mass of an object

Force=Mass x acceleration

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11
Q

What is stopping distance?

A

Thinking distance + braking distance

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12
Q

What is thinking distance?

A

Thinking distance is how far you’ve travelled during your reaction time

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13
Q

What is braking distance?

A

How far you’ve travelled when you start to break

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14
Q

What are the things that affect thinking distance?

A
.Pain
.phone
.drugs
.alcohol
.speed
.rush/in a hurry
.tired
.age
.Visibility
.Other people talking
.Eating
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15
Q

What are the factors that affect braking distance?

A
.Tyre conditions
.speed
.road steepness
.Brake conditions
.Road conditions
.The mass of the car
.Weather conditions
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