Perform the following calculations and express your answer using the correct number of significant digits.(a) A woman has two bags weighing 13.5 pounds and one bag with a weight of 10.2 pounds. What is the total weight of thebags?(b) The force F on an object is equal to its mass m multiplied by its acceleration a . If a wagon with mass 55 kgaccelerates at a rate of 0.0255 m/s2, what is the force on the wagon? (The unit of force is called the newton, and it isexpressed with the symbol N.)

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A:

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A:

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A: 11.13 kg+22.2 g=? 22.2 g=22.2/1000=0.0222 kg

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!