2. (a) The figure below shows an overhead view of 0.04 kg wood and two of the three forces that act on the wood as it is on frictionless floor. Force F, = 7N . Force F, = 8.5 N and 0, = 35° . In unit vector notation, calculate the magnitude of the third force if the wood has velocity v = (4.0tî – 5.0tj)m/s, where tis time. V
2. (a) The figure below shows an overhead view of 0.04 kg wood and two of the three forces that act on the wood as it is on frictionless floor. Force F, = 7N . Force F, = 8.5 N and 0, = 35° . In unit vector notation, calculate the magnitude of the third force if the wood has velocity v = (4.0tî – 5.0tj)m/s, where tis time. V
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2a
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(a) The figure below shows an overhead view of 0.04 kg wood and two of the three
forces that act on the wood as it is on frictionless floor. Force F, = 7N . Force
F, = 8.5 N and e, = 35° . In unit vector notation, calculate the magnitude of the third
force if the wood has velocity v= (4.0tî – 5.0tî)m /s, where tis time.
V =
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