Instructions: Read the following paragraph carefully. Then use what you know about momentum, work, and energy to answer the following questions. Be sure to show your work.
You are a traffic accident investigator. You have arrived at the scene of an accident. Two cars of equal mass (1,000 kg each) were involved in a rear-end accident at a stop sign. Here is what you know:

Car 1 approached the intersection from the top of a 25-meter hill.
Car 2 was on a flat stretch of road directly in front of Car 1.
At the bottom of the hill, Car 1 was going 20 m/s; Car 2 was going 30 m/s before it

Question

Instructions: Read the following paragraph carefully. Then use what you know about momentum, work, and energy to answer the following questions. Be sure to show your work. 
You are a traffic accident investigator. You have arrived at the scene of an accident. Two cars of equal mass (1,000 kg each) were involved in a rear-end accident at a stop sign. Here is what you know: 

Car 1 approached the intersection from the top of a 25-meter hill. 
Car 2 was on a flat stretch of road directly in front of Car 1. 
At the bottom of the hill, Car 1 was going 20 m/s; Car 2 was going 30 m/s before it