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Flashcards in 1 and 2 Deck (23)
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1

What is scalar

Something that direction doesn’t effect and are based sourly on magnitude.

2

Examples of scalars

Distance
Speed
Mass
Energy

3

What is a vector

Depends on magnitude and direction.

4

Examples of vectors

Displacement
Velocity
Acceleration
Force
Weight
Momentum

5

What is acceleration

A change on velocity over time

6

Acceleration formular

A=(V-U)
——-
T
V = final velocity
U = initial velocity

7

Units of acceleration

M/s/s or m/s (squared)

8

DT graph

Steeper the slope faster the speed.
Horizontal = stopped.
Speed = distance/ time

9

VT graph

Steep slope means ACCELERATION.
Horizontal line = steady speed
Distance covers = area under the line on the graph.

10

Newton’s 2nd law

F = M x A

11

Newtons 3rd law

For every action there is an equal and opposite reaction

12

Newtons 1st law

An object in motions stays in motion until a oppersite force in applied to it.

13

Momentum

P = M x V

Measured in KG/M/S

14

Stopping distance

Stopping distance = thinking distance + braking distance

15

What effects thinking distance?

- reactions
- drugs in body
- distractions
- speed

16

What effects breaking distance

- road conditions
- weather
- brake conditions
- tyre conditions

17

Kinetic energy formula

Kinetic energy = 0.5 x mass x velocity x velocity

18

Work done formula

Work done = force x distance moved.

19

Conservation of mass

When two objects collide the momentum stays the same

20

In a crash, send in general the force equation is:

Force = change in momentum
—————————-
Time

21

Gravitational potential energy formular

GPE = Weight x Height

22

Weight formula

Weight = mass x gravity

23

Speed formula

Speed = D/T