AllyStrad
Answered

Explore Westonci.ca, the top Q&A platform where your questions are answered by professionals and enthusiasts alike. Experience the convenience of finding accurate answers to your questions from knowledgeable professionals on our platform. Connect with a community of professionals ready to help you find accurate solutions to your questions quickly and efficiently.

Two railroad cars,each of mass 7650 kg and traveling 95 km/h in opposite directions, collide head-on and come to rest. How much thermal energy is produced in this collision?

Sagot :

AL2006
Kinetic energy = (1/2) (mass) (speed²)

The mass of each car is 7,650 kg.

The speed of each car is (95 km/hr) x (1,000m/km) x (1 hr/3,600 sec)
               = 26.3889 meters/sec

Kinetic energy of each car = (1/2) (7,650) (26.3889)² = 2,663,628 joules

Total kinetic energy of both cars = double that number = 5,327,256 joules

That's the total energy dissipated in the crash.  We can't tell how much of it is thermal energy, and how much of it is dissipated in other ways, like tearing up the rails, bending and twisting the cars and ripping them to shreds, and sending pieces flying in every direction.
We appreciate your visit. Our platform is always here to offer accurate and reliable answers. Return anytime. We appreciate your time. Please come back anytime for the latest information and answers to your questions. Find reliable answers at Westonci.ca. Visit us again for the latest updates and expert advice.