Can someone help me with my assignment. (Will Mark Brainliest). I posted a picture of part 1. ( Part 2) Directions: Use the KE and GPE equations to solve for speed or height depending on the situation. Question 1) A 1,000-kg car has 50,000 joules of kinetic energy. What is its speed? Question 2) A 200-kg boulder has 39,200 joules of gravitational potential energy. What height is it at? Question 3) A 1-kg model airplane has 12.5 joules of kinetic energy and 98 joules of gravitational potential energy. What is its speed? What is its height? ( Need Help ASAP).

Read this summary of a scientific theory: "cells are the most basic structural and functional units of life. all living organisms are made up of one or more cells. all cells that are alive in the world today came from pre-existing cells." which of the following would require this theory to be modified? -a.) a survey finds that a majority of people believe viruses carry out the basic processes of life. -b.) a prominent scientist says she feels strongly that one day the theory will be challenged by life on other planets. -c.) the dna of unicellular and multi-cellular organisms is shown to have many fundamental similarities. -d.) scientific observations show that microscopic organisms living in the deep ocean are not made up of cells.