Physics

• V= displacement/time
• a = (v-u)/t
• Momentum: P=mv
• Moment: τ=Fd
• net force : F=ma
• Impulsive force: F=(mv-mu)/t
• Impulse: I=Ft
• Impulse: I=mv-mu
• Hooke's law: F=kx
• Density: d=m/v
• Elastic collision: m1u1 + m2u2 = m1v1 + m2v2
• Inelastic collision: m1u1 + m2u2 = (m1 + m2)V
• Explosion: m1v1 + m2u2 =0
• Moment equilibrium: moment anticlockwise = moment clockwise
• Weight: w=gm
• Distance : d = ut + ½at²