Two ice skaters, Sandra and David, stand facing each other on frictionless ice. Sandra has a mass of 45 kg, David a mass of 80 kg. They then push off from each other. After the push, Sandra moves off at a speed of 2.2 m/s. What is David’s speed?

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A: Given: Mass of Johny mJ=70 kg Mass of dock mD=200 kg Acceleration of Johny aj=2 m/s2

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A: GivenTotal mass (m) = 40 KgInitial velocity (U) = 5.8 m/sFinal velocity (V) = 0Force of friction (F)…

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A: Given: Initial height of Jane is hi=4.7 m Mass of Jane is mJ=55 kg Mass of Tarzan is mT=70 kg Find:…

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A: Recall Favg=∆P/∆t

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Q: Two identical cars A and B are moving as shown below. Car B moving with speed of 13 m/s collides…

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Q: A 13 N east

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Q: A 85 kg man lying on a surface of negligible friction shoves a 82 g stone away from himself, giving…

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Q: Consult Concept Simulation 7.1 in preparation for this problem. Two friends, Al and Jo, have a…

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Q: A 6.0 ✕ 104 kg space probe is traveling at a speed of 12000 m/s through deep space. Retrorockets are…

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A: As forces are in opposite direction : Net force = Fnet=30-20=10 Na=2m/s2

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Q: Gayle runs at a speed of 3.65 m/s and dives on a sled, initially at rest on the top of a…

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