What is the persons speed at the point

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Q. A person doing a chin-up weighs 700.0 N, disreguarding the weight of the arms. During the first 25.0 cm of the lift, each arm exerts an upward force of 355 N on the torso. If the upward movement starts from rest, what is the person's speed at this point?

Q. A 17 g particle is moving to the left at 24 m/s. How much net work must be done on the particle to cause it to move to the right at 40 m/s?

Reference no: EM1353778

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