Problem: A train is moving along a track with constant speed v1 relative to the ground. A person on the train holds a ball of mass m and throws it toward the front of the train with a speed v2 relative to the train.Calculate the change in kinetic energy of the ball in the Earth frame of reference.Calculate the change in kinetic energy of the ball in the train frame of reference.How much work was done on the ball in the Earth frame of reference?How much work was done on the ball in the train frame of reference?

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A train is moving along a track with constant speed v1 relative to the ground. A person on the train holds a ball of mass m and throws it toward the front of the train with a speed v2 relative to the train.

Calculate the change in kinetic energy of the ball in the Earth frame of reference.

Calculate the change in kinetic energy of the ball in the train frame of reference.

How much work was done on the ball in the Earth frame of reference?

How much work was done on the ball in the train frame of reference?

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Our tutors have indicated that to solve this problem you will need to apply the Net Work & Kinetic Energy concept. You can view video lessons to learn Net Work & Kinetic Energy. Or if you need more Net Work & Kinetic Energy practice, you can also practice Net Work & Kinetic Energy practice problems.