4. Sophia, an aspiring figure skater, collides with Emma, a rival figure skater, who had an initial velocity of 3.5 m/s [E]. Sophia, who has a mass of 59 kg, had a final velocity of 4 m/s [12° S of E]. Emma, who has a mass of 55 kg, had a final velocity of 3.7 m/s [56° N of W]. What was the initial velocity of Sophia? V1i = 3.5 m/s [E] V2i = ? ズス Emma Sophia

4. Sophia, an aspiring figure skater, collides with Emma, a rival figure skater, who had an initial velocity of 3.5 m/s [E]. Sophia, who has a mass of 59 kg, had a final velocity of 4 m/s [12° S of E]. Emma, who has a mass of 55 kg, had a final velocity of 3.7 m/s [56° N of W]. What was the initial velocity of Sophia? V1i = 3.5 m/s [E] V2i = ? ズス Emma Sophia

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Description: 4. Sophia, an aspiring figure skater, collides with Emma, a rivalfigure skater, who had an initial velocity of 3.5 m/s [E].Sophia, who has a mass of 59 kg, had a final velocity of 4m/s [12° S of E]. Emma, who has a mass of 55 kg, had afinal velocity

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter8: Linear Momentum And Collisions

Section: Chapter Questions

Problem 59PE: Given the following data for a fire extinguisher-toy wagon rocket experiment, calculate the average...

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A model rocket engine has an average thrust of 5.26 N. It has an initial mass of 25.5 g, which includes fuel mass of 12.7 g. The duration of its burn is 1.90 s. (a) What is the average exhaust speed of the engine? (b) This engine is placed in a rocket body of mass 53.5 g. What is the final velocity of the rocket if it were to be fired from rest in outer space by an astronaut on a space-walk? Assume the fuel burns at a constant rate.
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Given the following data for a fire extinguisher-toy wagon rocket experiment, calculate the average exhaust velocity of the gases expelled from the extinguisher. Starting from rest, the final velocity is 10.0 m/s. The total mass is initially 75.0 kg and is 70.0 kg after the extinguisher is fired.
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(a) A car traveling due east strikes a car traveling due north at an intersection, and the two move together as a unit. A property owner on the southeast corner of the intersection claims that his fence was torn down in the collision. Should he be awarded damages by the insurance company? Defend your answer, (b) Let the eastward-moving car have a mass of 1.30 103-kg and a speed of 30.0 km/h and the northward-moving car a mass of 1.10 103-kg and a speed of 20.0 km/h. Find the velocity after the collision. Are the results consistent with your answer to part (a)?
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(a) A car traveling due east strikes a car traveling due north at an intersection, and the two move together as a unit. A property owner on the southeast corner of the intersection claims that his fence was torn down in the collision. Should he be awarded damages by the insurance company? Defend your answer, (b) Let the eastward-moving car have a mass of 1.30 103-kg and a speed of 30.0 km/h and the northward-moving car a mass of 1.10 103-kg and a speed of 20.0 km/h. Find the velocity after the collision. Are the results consistent with your answer to part (a)?
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