Write a paragraph about getting to Mars using the following dot points

What object a collides with object b and bounces back its final momentum is?

Need this now! do pilots live long

Engineers find a new metal that is stronger than steel but much lighter. this material is also significantly cheaper than what is currently used for most aircraft, available in large quantities, and easy to manufacture. the engineers are excited because this new material will lower the costs of buying and operating airplanes for companies. what is probably the best step for the engineers to make next?