Question

When a speeding truck hits a stationary car, the car is deformed and heat is generated. what can you say about the kinetic energy of the system after the collision? a. the kinetic energy of the system is conserved. b. the kinetic energy of the system is partially used for deforming the car. c. the kinetic energy of the system is not responsible for deforming the car. d. the kinetic energy of the system is completely transformed to heat energy.

Answer 1

When a speeding truck hits a stationary car, the car is deformed and heat is generated. In this case, the kinetic energy of the system is not conserved. Some of the kinetic energy of the system is used to deform the car and some of it is converted into heat energy.

Therefore, option b is the correct answer. The kinetic energy of the system is partially used for deforming the car.