You are riding on a roller coaster that starts from rest at a height of 25.0 m and moves along a frictionless track. However, after a bad storm some leaves settled on part of the track causing a 9.4-m length of the track to exert a frictional force of 625 N on the car. To safely make it around the loop, the 50-kg car must have a minimum speed of 7.7 m/s at the top of the loop (point B). How fast should the car be moving initially at point A to ensure that it reaches the top of the loop with the minimum required speed? Quantitative Prelecture Video: Conservation of Energy13 of 14>I Review | ConstantsClick Play to watch the video below. Answer theungraded questions in the video and the gradedfollow-up questions at right.Part CYou are riding on a roller coaster that starts from rest at a height of 25.0 m and moves along a frictionlesstrack. However, after a bad storm some leaves settled on part of the track causing a 9.4-m length of thetrack to exert a frictional force of 625 N on the car. To safely make it around the loop, the 50-kg car musthave a minimum speed of 7.7 m/s at the top of the loop (point B). How fast should the car be movinginitially at point A to ensure that it reaches the top of the loop with the minimum required speed?What is the car'sspeed at the top?20 mV= 11 m/s14 mMAOmv? = v? - 29AY4.00 mB25.0 m12.0 m3.00 m

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You are riding on a roller coaster that starts from rest at a height of 25.0 m and moves along a frictionless track. However, after a bad storm some leaves settled on part of the track causing a 9.4-m length of the track to exert a frictional force of 625 N on the car. To safely make it around the loop, the 50-kg car must have a minimum speed of 7.7 m/s at the top of the loop (point B). How fast should the car be moving initially at point A to ensure that it reaches the top of the loop with the minimum required speed?

You are riding on a roller coaster that starts from rest at a height of 25.0 m and moves along a frictionless track. However, after a bad storm some leaves settled on part of the track causing a 9.4-m length of the track to exert a frictional force of 625 N on the car. To safely make it around the loop, the 50-kg car must have a minimum speed of 7.7 m/s at the top of the loop (point B). How fast should the car be moving initially at point A to ensure that it reaches the top of the loop with the minimum required speed?