Physics

• Density= mass/volume
• Density= $g/cm^3$
• Momentum= mass x volume
• Momentum= Ns
• Moment= force x perpendicular distance from pivot
• d= m/v
• p= mv
• T= fd
• Average speed= total distance/total time
• Average speed= m/s
• Average velocity= total displacement/total time
• Average velocity= m/s
• Acceleration= (final-initial velocity)/time
• a= (v-u)/t
• Acceleration= $m/s^2$
• Net force= mass x acceleration
• Net force= N
• f= ma
• Impulsive force= (mass x final velocity-mass x initial velocity)/time
• Impulsive force= N
• IF= (mv-mu)/t
• Impulse= force x time
• Impulse= ft
• Impulse= Ns
• Impulse= mass x final velocity - mass x initial velocity
• Hooke's law & Spring constant = force/extension
• Hooke's law & Spring constant= N/m
• K= F/x
• Moment equilibrium= moment clockwise = anticlockwise
• Elastic collision= mass 1 x initial velocity 1 + mass 2 x initial velocity 2= mass 1 x final velocity 1 + mass 2 x final velocity 2
• Elastic collision= $m1u1 +$$m2u2 =$$m1v1 +$$m2v2$
• Inelastic collision= mass 1 x initial velocity 1 + mass 2 x initial velocity 2 = (mass 1 + mass 2) final velocity
• Inelastic collision= m1u1 + m2u2 = (m1+m2) v
• Explosion= mass x final velocity - mass x initial velocity = 0
• Explosion= mv - mu = 0
• Weight= mass x gravitational field strength
• w= mg
• Weight= N
• Velocity= speed/time
• v= s/t