A ball travels east at relative to the ground

PHYSICS · Subjective · AP · Physics 1: Algebra-based · Kinematics · Kinematics

Problem

A 2.0 kg2.0\,\text{kg} ball travels east at 3.0 m/s3.0\,\text{m/s} relative to the ground. A runner moves east alongside the ball at the same speed. Determine the ball’s translational kinetic energy in the runner’s frame of reference.

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