In which of the following cases would you do the least amount of work?
1.You push a box a distance d across a floor.
2.You pick up the box, walk a distance d, and gently put the box down on the floor.
3.You pick up the box, walk a distance d, and drop the box.
4.Both 1 and 2 are the least.
5.Both 1 and 3 are the least.
6.Both 2 and 3 are the least.
7.The amount of work done is the same in all three cases.
8.The amount of work cannot be determined from information given.
Question 2Two blocks, M1 > M2, having the same speed, move from a frictionless surface onto a surface having friction coefficient k.
Which stops in the shorter time?
1. M1
2. M2
3. Both stop in the same time
4. Cannot be determined
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