14.35 Two automobiles A and B, of mass mA and mB, respectively, are traveling in opposite directions when they collide head on. The impact is as- sumed perfectly plastic, and it is further assumed that the energy absorbed by each automobile is equal to its loss of kinetic energy with respect to a moving frame of reference attached to the mass center of the two-vehicle system. Denoting by EA and EB, respectively, the energy absorbed by auto- mobile A and by automobile B, (a) show that EA/EB = mB/mA, that is, the amount of energy absorbed by each vehicle is inversely proportional to its mass, (b) compute E and EB, knowing that m₁ = 2400 kg and mg = 1350 kg and that the speeds of A and B are, respectively, 135 km/h and 90 km/h. VB B

14.35 Two automobiles A and B, of mass mA and mB, respectively, are traveling in opposite directions when they collide head on. The impact is as- sumed perfectly plastic, and it is further assumed that the energy absorbed by each automobile is equal to its loss of kinetic energy with respect to a moving frame of reference attached to the mass center of the two-vehicle system. Denoting by EA and EB, respectively, the energy absorbed by auto- mobile A and by automobile B, (a) show that EA/EB = mB/mA, that is, the amount of energy absorbed by each vehicle is inversely proportional to its mass, (b) compute E and EB, knowing that m₁ = 2400 kg and mg = 1350 kg and that the speeds of A and B are, respectively, 135 km/h and 90 km/h. VB B

Elements Of Electromagnetics

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ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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Concept explainers

Thermal Properties of Materials

In mechanical engineering, the thermal property is represented as the physical quantity that is relevant to the application of heat. The thermal properties are evaluated by variations in any specific material due to low heat or high heat. The quantities that influence the thermal property of the materials are mass, density, temperature, and many others.

Question

14.35 Two automobiles A and B, of mass mĄ and m³, respectively, are
traveling in opposite directions when they collide head on. The impact is as-
sumed perfectly plastic, and it is further assumed that the energy absorbed
by each automobile is equal to its loss of kinetic energy with respect to a
moving frame of reference attached to the mass center of the two-vehicle
system. Denoting by EA and EB, respectively, the energy absorbed by auto-
mobile A and by automobile B, (a) show that EA/EB = mB/mA, that is, the
amount of energy absorbed by each vehicle is inversely proportional to its
mass, (b) compute EA and EB, knowing that mA = 2400 kg and mg = 1350 kg
and that the speeds of A and B are, respectively, 135 km/h and 90 km/h.
VB
B

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