An object weighs 294n in the air. when tied to a string, Ask an Expert

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Q. In a head-on collision, a car stops in 0.10 from a speed of 20 . The driver has a mass of 74 , and is, fortunately, tightly strapped into his seat. What force is applied to the driver by his seat belt during that fraction of a second?

Q. An object weighs 294 N in the air. When tied to a string, connected to a balance, and immersed in water, it weighs 240 N. When it is immersed in oil, it weighs 258 N.

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