Momentum© Copyright NewPath Learning. All Rights Reserved. 94-4882Visit www.newpathlearning.com for Online Learning Resources.MomentumMomentum refers to the amount of motion that is taking place. To calculate the momentum of an object, multiply its mass by its velocity. A pick-up truck with a mass of 3000 kg is moving at 40 km/hr. The truck’s momentum is 120,000 kg-km/hr. Momentum is also described by its direction. An object’s momentum is always in the same direction as its velocity. Conservation of MomentumWhen groups of objects are involved, and there is no outside force, the total momentum of the group does not change. This is called the law of conservation of momentum. For example, when bumper cars collide, the momentum is transferred from one car to another, while the total momentum is conserved. momentum = mass x velocity3000 kg x 40 km/hr = 120,000 kg km/hr3000 kg40 km/hrdirection of momentum = direction of velocity300 kg0 m/sec300 kg5 m/sec300 kg0 m/sec300 kg5 m/sec300 kg0 m/secmomentum1500 kg m/secmomentum1500 kg m/secMomentum is transferred from car A to car B.Momentum is transferred from car B to car C.Total momentum of the group does not change.AABBCCMomentum refers to the amount of motion that is taking place. To calculate ttttttthhhhhhhhhhhhhhhhhhhhhhheeeeeeeeeee mmmmmmmmmmmmmomentummmm ooooooooooooooffffffffffffff aaaaaaaaaaaann obbbbbbbbbbbbbbbjjjjjjjjjjjjjjjjjjeeeeeeeeeeeeeeeeccccccccccct, multiply its mass by its velocity. A pick-up truck with a mass of 3000 kg is mmmmmmmmmmmmmmooooooooovvvvvvvvviiiiiiiiiiiiinnnnnnnnnnnnnnnngggggggggggggggg at 40 km/hr. Thhhhhhhhheeeeeeee tttttttttttttrrrrrrrrrrrruuck’sssssss momentum is 120,000 kg-km/hr. Momentum is also described by its direecccccccccccccccttttttttttttttttiiiiiiiiiiiiooooooooooooooonnnnnnnnnnn. AAAAAAAAAAAAAAAAAAAAnnnnnnnnnnnnnnn ooooooooobbbbbbbbbbbbbbbbjjjjjjjjjjjjjjjjjeeeeeeeeeeeeeeeeccccccct’s momentttttttuuuuuuuuuuuuuuuummmmmmmmmmmm iiiiiiiiiiisssssss always in the same direction as its velocity. WWWWWWWWWWWWWWWWWWWhhhhhhhhhhhhhhhhen groups of objects are involved, and there is no outside force, the total momentum of the group does not change. This is called the law of conservation of momentum. For example, when bumper cars collide, the momentum is transferred from one car to another, while the totalmomentum is conserved. 300 kg3000 kg0 m/sec0 mm/secc0 m/sec0 m/sec3333333000000 kgggggggggggggggggggggk0033330003ggggggg55555555555555555555555 mmmmmmmmmmmmm//////////////////////sssssssssssssseeeeeeeec55555555 m///////////s555555555//5555555555555/////33333333333333000000000000000 kkkkkkkkkkkkkkkgggggggggggggggggggggggggkkkkkkkkkkkk0033333333333333333300000000000 mmmmmmmmmmmmmmm////////////sssssssssececssssse/////////////mmmmmmmmmm00000000 00000000000300 kggk0003035 m/seccse/smm5533333333333333330000000000000000000000000 kkkkkkkkkkkkkkkkggggggggggggggg333333333333333300000000000000000 kkkkkkkkkggggggggggggg00000000 mmmmmmmmmmmmmmmmmmmmm////////sssssssssssseeeeeeeeeeeecccccc000000000000 mmmmmmmmmmmmmm/////////////////sssssssssssseeeeeeeeeeeeccccccccmomentuuuuuuuuuuuummmmmmmmmmmmmmmm1500 kg mmmmmmmmmmmmmmmm/sssssssssssssseeeeeeeeeeeeeeccccccccccccccmmooooooooooooommmmmmmmmmmmmmmmmmeeeeeeeentum11111111111111111115555555555555555550000000000000 kg m/sec1MMMMMMMMMMMooommmmmmmmmmmmmmmmmmmmmeeeeeeeeeenttum iis ttransfffffffffffffffeeeeeeeeeeeeeeeeeerrrrrrrrrrrrredd eeeeeeeeeeefffffffrrrroooooooooooooooommmmmmmmmmmmmmmm carrr AAAAAAAAAAAAAAA to car BBBBB...MMMMMMMMMMMMMMMMMMMoooommmeeeeeeeeeeeeeennnnnnnnnnnnnnnnntttttttttttttttttuuuuuuuuuuuuuuummmmm is transferred MMMMMMMfrommmmmmmmmmmmmmm ccccccccccccccccccccaaaaaaaaaaaaaaaarrrrrrrrrrr BBBB tttttttttttttttttoooooooooooooooooooooooo cccccccccccccccccaaaaaaaaaaaaaaaarrrrrrr C.Total momentum of the group does not change.
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