Before you can start learning about Forces and Newtonâ€™s Laws of Motion, you need to understand inertia and mass. This video defines both and more specifically inertial mass.
0:13 Defining inertia
1:04 Demonstrating inertia
1:26 Defining inertial mass
2:17 Marcia demonstrates the concept of inertial mass
3:06 Inertial mass not Gravitational mass
4:00 How I filmed a steel sphere moving at a constant velocity
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