Term 1 formulas

Velocity (v)

Rate of change of displacement

displacement (m) / time (s)

s/t

Acceleration (a)

rate of change of velocity.

change in velocity / time taken

a=∆v/t

a = v - u / t

u= Starting Velocity

v= Final Velocity

t= Time

Displacement (s)

Average Velocity x Time

( u + v) x t

u = Starting velocity

v= Final velocity

Linear Momentum (p) (Kgms⁻1)

The product of mass by velocity.

mass(kg) x Velocity (ms⁻1)

p=mv

Force (F)

A push or pull that one object exerts on another through mutual interaction between the two objects.

F=ma

Force= Mass x Acceleration

Unit= N for Newtons

Mass or m is constant

Moment of a Force (T )

The product of force by perpendicular distance.

T= F x perpendicular d

The principle of moments

When an object is in equilibrium, the sum of clockwise moments = the sum of anti-clockwise moments

basically, the following are the conditions for equilibrium

1) ∑ Tcw = ∑ Tac only when the object is in equilibrium

or

2) ∑ F↑ = ∑ F↓

1) The sum of the clockwise moments= the sum of anticlockwise moments

2) The sum of the force moving upwards = the sum of the force moving downwards

Hooke’s Law