written 2 physics.docx - Nicholas Vrabel PHY-115-OL009...

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Nicholas Vrabel PHY-115-OL009 Written Assignment 2 December 2017 1. Answer the following: a. What are the units of mass and the units of weight for the metric system? i. Mass - kilograms ii. Weight - Newtons b. What are the units of mass and the units of weight for the English system? i. Mass - ii. Weight - pounds 2. Explain the relationship between the mass and the weight of an object. Is the mass of an object the same on earth and the moon? Are the weights the same on earth and the moon? a. Mass is the amount of matter an object has. Weight is the force on an object due to gravity. The mass of an object remains the same on Earth and on the moon. The weight of an object is different on Earth and the moon because the moon has 0 gravity. 3. In your own words, explain Newton's second law of motion and give two examples. a. The more mass an object has the more force needed to move it. b. An airplane that is empty requires less thrust to take off than a plane that is fully loaded c.
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