Answer:
C. –159 m/s2
Explanation:
Explanation: The relationship between force, mass, and acceleration is given by Newton’s second law: F = ma. This can be rewritten a = F/m. In this problem the force of the crumple zone on the wall is given as 342 kN, which is equivalent to 342,000 N. Based on Newton’s third law, the wall will exert an equal but opposite force on the car (–342,000 N). Therefore, the acceleration of the car is equal to:
–342,000 N ÷ 2,150 kg = –159 m/s2
