# Mechanics AS Flashcards Preview

## Edexcel A Level Maths Equations and Definitions > Mechanics AS > Flashcards

Flashcards in Mechanics AS Deck (29)
1
Q

Pushing force

A

Thrust

2
Q

Pulling force

A

Tension

3
Q

Resistive force

A

Friction

4
Q

Rebound force

A

NCRF

5
Q

Gravity modelling assumption

A

Vertical and CONSTANT

6
Q

A

Smooth has NO FRICTION

7
Q

A

Has negligible dimensions

8
Q

A

0 mass

9
Q

SUVAT without s

A

a = v-u /t

10
Q

SUVAT without a

A

S = t (v+u)/2

11
Q

SUVAT without u

A

S = vt - 1/2 at^2

12
Q

SUVAT without v

A

S = ut + 1/2 at^2

13
Q

SUVAT without t

A

V^2 = u^2 + 2as

14
Q

displacement to velocity to acceleration

A

Differentiate

15
Q

Acceleration to velocity to displacement

A

Integrate

16
Q

r = (position vector)

A

r = r0 + s

s = displacement
r = original position

17
Q

SUVAT not used in 2D

A

v^2 = u^2 + 2as because squares aren’t vectors

18
Q

Modelling assumptions with projectiles

A

No air resistance,
Move freely under gravity,
No spin

19
Q

time of flight =

A

2u sinθ / g

20
Q

Horizontal displacement =

A

u^2 sin 2θ / g

21
Q

Time reached maximum height = (in terms of time)

A

Time of flight / 2

22
Q

Maximum height

A

u^2 sin^2 θ / 2g

23
Q

NI definition

A

an object at rest will stay at rest and an object moving at a constant VELOCITY will remain at a constant velocity unless a RESULTANT force acts upon it

24
Q

Rf =

A

F1 + F2 + F3 …

25
Q

NII definition (maths)

A

The RESULTANT force acting on a body is EQUAL to the PRODUCT of the mass of the body and its acceleration and force and acceleration are in the same direction.
F = ma

26
Q

NIII definition

A

The force exerted by body A on body B is equal in magnitude to the force exerted by body B on body A but in an opposite direction

27
Q

Find tension between two bodies connected by a string

A

Equal magnitude and opposite directions from each box
THEREFORE can model 2 particles as ONE PARTICLE

28
Q

equation for pulleys

A

NII and SUVAT

29
Q

Direction of tension in pulley system

A

Always TOWARDS pulley and OPPOSES WEIGHT