Can somebody do me a favor and answer pt 2 of my project.. only answer if you know a bit about the topic and 30 point!

What are segments of dna that code for a particular trait. a combination of dna and proteins make up what

A1200 kg car traveling north at 10 m/s is rear-ended by a 2000 kg truck traveling at 30 m/s. what is the total momentum before and after the collision?

3. a lunar exploration vehicle was created by a research team. it weighs 3,000 kg on the earth. it needs an acceleration of 10 m/s2 on the moon. in order to have the same acceleration, what will be the net force acting on the vehicle on the earth?