Work

It takes 20 N of force to move a box a distance of 10 m. How much work is done on the box in Joules?

• 200 J

• 100 J

• 20.0 J

• 10 J

 I do 132 Joules of work on a bookcase. If I apply a force of 6 Newtons, how far have I moved the bookcase?

• 22 meters

• 17 meters

• 792 meters

• 320 meters

 In which of the following situations do your arms do work on books?

• holding a heavy stack of books while standing

• carrying a heavy stack of books

• dropping a stack of books onto a table

• picking up a pile of books from the floor

In order to do work on an object, the force you exert must be______?

• The maximum amount of force you are able to exert.

• In a direction opposite to Earth's gravitational force.

• In the same direction as the object's motion.

• quick and deliberate.

If a lion drags his prey 10 meters to his den doing 500 joules of work, how much force did he use?

• 500 Newtons

• 50 Newtons

• 50,000 Newtons

• 10 Newtons

Which of the following statement describes WORK in physics?

• Laura did a lot of work moving tables.

• Thinking up an answer to this problem is a lot of work.

• My flashlight won’t work.

• Finishing my assignment about work.

How much work does an elephant do while moving a circus wagon 20 meters with a pulling force of 200 N?

• 10J

• 400J

• 4,000J

• 0.1J

Tommy does 15 Joules of work to push the pencil over 1 meter.  How much force did he use?

• 1N

• 0.06N

• 15N

• 16N

Leo is cutting the grass using a human-powered lawn mower. He pushes the mower with a force of 45 N directed at an angle of 41^o below the horizontal direction. Calculate the work that Leo does on the mower in pushing it 9.1 m across the yard.

• 310J

• 290J

• 200J

• 360J

Allan carries an 4.0 kg suitcase as he walks 10 m along a horizontal walkaway to her room at a constant speed of 2.0 m/s. How much work does Allan do in carrying his suitcase?

• 25.5J

• 50J

• 0J

• 30J