8 min read
This study guide covers conservation of linear momentum, focusing on center-of-mass velocity, total system momentum, and momentum changes within systems. It explains system selection for momentum analysis, including scenarios with zero and non-zero net external forces. The guide also provides practice questions, exam tips, and common mistakes to avoid.
Give us your feedback and let us know how we can improve
Question 1 of 12
Two identical toy cars, each with a mass of 2 kg, are moving along a straight line. Car A is moving at 3 m/s, and Car B is at rest. What is the velocity of the center of mass of this system? 🚗
0 m/s
1.5 m/s
3 m/s
4.5 m/s