Physics
7th Edition
ISBN: 9780321733627
Author: Douglas C. Giancoli
Publisher: PEARSON
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Chapter 4, Problem 5P
Superman must stop a 120-km/h train in 150 m to keep it from hitting a stalled car on the tracks. If the train's mass is 3.6 x 105 kg, how much force must he exert? Compare to the weight of the train (give as %). How much force does the train exert on Superman?
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Superman must stop a 120-km/h train in 200 m to keep it from hitting a stalled car on the tracks. If the train’s mass is 3 X 105 kg, how much force must he exert? Compare to the weight of the train (give as %). How much force does the train exert on Superman? Solution in handwritten.
Superman must stop a 130-km/hkm/h train in 110 mm to keep it from hitting a stalled car on the tracks. The train's mass is 3.6 ×× 105 kgkg.
Determine the force that must be exerted on the train.
Compare the magnitudes of the force exerted on the train and the weight of the train (give as %%).
How much force does the train exert on Superman?
Three forces act on a 5-kg object: F1 = -2.0i + 3.0j N, F2 = 5.0i + 3.5j N, and F3 =
0.5i- 1.0j N. Assuming the object starts at rest at to = 0, write its velocity as a function of
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Chapter 4 Solutions
Physics
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Problem 21.
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