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Flashcards in Forces Deck (15):
1

What is displacement?

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

2

How do you represent constant speed?

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

3

What is the SI unit for speed?

M/s

4

What is acceleration?

Velocity divided by time taken

5

How do you know what is the greatest positive speed?

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

6

What are examples of scalars?

Distance
Time
Speed

7

What are the examples of vectors?

Velocity
Displacement
Acceleration

8

Non contact forces

Gravity
Magnetism
Electromagnetism

9

Contact forces

Push
Pull
Friction

10

What is Newton's second law?

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

11

What is stopping distance?

Thinking distance + braking distance

12

What is thinking distance?

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

13

What is braking distance?

How far you've travelled when you start to break

14

What are the things that affect thinking distance?

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

15

What are the factors that affect braking distance?

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