Answer Happy

3. Many roller coasters have loops where carts roll on a track that curves up sharply into the air. At the top, the people are upside down (and most likely screaming). For safety reasons, many of these roller coasters must have a minimum speed at the top of the loop. For this question, the cart must have a minimum speed of 10m/s at the top of the loop to make it around safely. Assuming the roller coaster starts at rest at the top of the first hill and there is no friction on the roller coaster, what is the minimum height of the first hill? 1-2 OHN O ground level