In which of the following cases would you do the least amount of ...

[lindiwe]

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 2

Two 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

[wtf444]

Answer to Question 1

2

Answer to Question 2

3