l..__''/ ass of 1040 kg and is moving at 2. The roller coaster at the New York New York hotel has a m 29.95 m/s. What is the roller coaster's KE? Formula, Algebra, Solve 3. A brother is tormenting his sister. He dangles her teddy bear, which has a mass of 2.1 kg, over a balcony 7 m high. Determine the teddy bear's PEg. Formula, Algebra, Solve 4. A person is slacklining (a new type of tightrope walking). The rope's spring constant is 2.4 Nlm. The rope has stretched 0.15 m due to the person walking on it. Find the rope's elastic PE. Formula, Algebra, Solve