As level physics equations part 1

speed=distance/time

velocity=  Displacement/time

Average speed=  (total distance)/(total time taken)

Acceleration=  (change in velocity)/(time taken)

Uniformly accelerated motion (SUVAT)

U = initial velocity/speed

V = final velocity/speed

t = time taken

a = acceleration

S = displacement

S=((U+V)/2)×t

V=U+at

S=Ut+1/2 at^2

V^2=U^2+2aS

S=ut (when a=0)

weight=mass ×gravitational field strength

momentum=mass ×velocity

force=mass ×acceleration

m_1 v_1= m_2 v_2  

kinetic energy=(momentum^2)/(2×mass)

impulse=force ×time 

impulse= ∆ momentum

work done=force ×displacement

moment=force ×displacement

tourque=force×displacement

sum of the anticlockwise moment=sum of the clockwise moment

work done=force ×displacement

power=(work done)/time

power=E/t

power=force ×velocity

∆ G.P.E=mgh

Kinetic energy=1/2 mv^2 

Efficiency=(usefull work done)/(energy input)  ×100%

Efficiency=(usefull energy output)/(energy input)  ×100%

w=p ×∆v