Hone your skills with some sample problems:
1. A 3.5 kg. mass is travelling at a constant velocity of 25 m/s. What force is required to slow it to a stop in 5 seconds?
2. A 42 kg. mass is resting on the Earth's surface. What force does it exert on the Earth?
3. A man wants to lift a crate full of pineapples. The crate weighs 230 kg. What force is required to lift it (at a constant velocity) straight up?
4. You are trying to move a piano. The coefficient of static friction between the carpet and the piano is 0.63. The piano weighs 405 kg. How much force is required to accelerate the piano?
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