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  1. M

    Grade 12 physics problem!

    1. Homework Statement 2 men with mass of 100kg each, are on a stationary cart with mass of 300 kg. The cart has no friction withthe tracks. The cart can only go north and south. 1st man starts runnin at speed of 5 m/s(reletive to cart) towards north and jumps off the cart. Otherman runs...
  2. M

    Grade 12 Physics question!

    1. A 1000 kg plane is trying to make a forced landing on the deck of a large 2000 kg barge at rest on the surface of a calm sea. The only frictional force to consider is between plane's wheels and the deck, and this braking force is constant and equal to one-quarter of the plane's weight...