Academic Integrity: tutoring, explanations, and feedback — we don’t complete graded work or submit on a student’s behalf.

1. [2pt] An object is displaced by s while acted upon by a force F (there might

ID: 1286628 • Letter: 1

Question

1. [2pt] An object is displaced by s while acted upon by a force F (there might be other forces acting that are not shown.) For which case is the work done by the force F positive? 2. [2pt] Equal forces are used to move blocks B and A across the floor. Block B has twice the mass of block A, but block A moves twice the distance moved by block B. Which block, if either, has the greater amount of work done on it? A) Block A, because it moves the larger distance. B) Cannot tell without knowing the exact masses and distances. C) The same amount of work is done on both blocks. D) Cannot tell without knowing the exact masses. E) Block B, because it is heavier.

Explanation / Answer

1 ) B
2) A