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Safari File Edit View History Bookmarks Window Help 8[4" 43% C ' Wed 11:17 PM a e E Quiz: RA 6 Question 1-Discussion Groups 10 Question 2 Discussion Groups 10 A block of mass 10 kg is moved An object is falling freely due to Quizzes Discussions Grades Files People UF A block of mass 10 kg is moved horizontally for a distance of 1 m by a force of 20 N. What is the work done by gravity on the block? O O joules O 20 joules 0-20 joules O 98 joules FLORIDA Account Dashboard Courses 28 Groups DQuestion 2 1 pts 8801 An object is falling freely due to gravity. If no other force other than gravity is acting on the object then the total mechanical energy (kinetic energy + potential energy) is Calendar Inbox O increasing. Help decreasing. O constant. 20

Explanation / Answer

(1) The work done by gravity is 0 since the displacement isn't due to gravitational forces.

(2) The energy of an isolated system always stays constant. Hence the last option is the correct choice.

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