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| 1. |
How much change will in kinetic energy if momentum is increased by 10 percent? |
| Answer» Let the initial mass of the body be m and its velocity be v.Initial momentum of the body = mvInitial KE = mv^2/2If the momentum increases by 10%, new momentum = mv + 10% of mv= mv + 10/100mv= mv + mv/10=11mv/10=m(11v/10)New velocity = 11v/10Increase in velocity = v/10New KE = m(11v/10)^2/2= 121/100mv^2/2Increase in KE = 21% | |