Asmall dog is trained to jump straight up a distance of 1.2m. how much kinetic energy does the 7.2kg dog need to jump this high? (the acceleration due to gravity is 9.8m/s2.) show work & and explain in simple

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?