question_answer

A truck and a car both moving with velocity v, have a head on collision both of them come to rest after that. If the collision lasts for 10 s. (i) Which vehicle experiences the greater force of impact? (ii) Which vehicle experiences the greater change in momentum? (iii) Why is the car suffer more damage than the truck?  

Answer:

(i) Both vehicle, experience same force of impact as accordance to Newton's third law of motion.                            (1) (ii) The truck experiences greater change in momentum because of its greater mass.                                                                     (1)                (iii) As acceleration is inversely proportional to the mass ( is same), car experiences greater change in acceleration so will suffer more damage.                                                                                                                                                                     (1)