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Name: ____________________________ Form: _______ Worksheet 4 - Weight. Exercise1: Say whether the following statements are True or False: i. Mass and weight are not the same thing. __________ ii. Since weight is a force, it is measured in Newtons. _________ iii. A rock on Earth has a smaller mass than it has on the moon. _________ iv. The mass of an object is the quantity in that object. _________ v. Weight does not change from place to place. _________ vi. A 13 year old boy has a mass of approximately 45 Newtons _________ Exercise2: Use the triangle shown below to complete the following formulae. Weight = ___________________ mass = ___________________ gravity = ___________________ weight mass x gravity Exercise 3: Find the weight (on the Earth’s surface) of the following objects. [Note: gravity on Earth = 10 N/kg] a) a girl whose mass is 40kg Weight = mass x gravity = 40x10 = 400N b) a book of mass 2kg ___________________________________ c) 1.5kg of sand ___________________________________ d) 1kg of potatoes ___________________________________ e) an apple whose mass is 300g ___________________________________ Exercise 4: Use your formula in exercise 2 to find the mass of the following objects. a) a box of weight 20N __________________________ b) a can of sausages of weight 0.5N __________________________ c) a desk of weight 150N __________________________ d) a basketball of weight 0.7N __________________________ e) a stereo of weight 10N __________________________