Choose between "cement mixer" and  "motorcycle". Question: A weighty cement mixer and a light motorcycle are waiting at a red light. When the light turns green, which accelerates more slowly? (A) cement mixer (B) motorcycle
cement mixer


(Question)
Choose between "picket fence" and  "tree branch". Question: A squirrel runs along a long tree branch. It ends at the top of a picket fence. The squirrel uses the same amount of energy but runs slower across the picket fence. Does this happen because (A) the tree has more ridges or (B) the picket fence has more ridges?
(Answer)
tree branch


Ques: Choose between "furniture movers on carpet" and  "furniture on carpet". Question: I bought some smooth plastic furniture movers which let me push heavy furniture across my carpet on my own. I got tired of asking for help to rearrange the furniture, as before I bought these I couldn't do it alone. This was because the furniture movers (A) increased friction or (B) decreased friction?
Ans: furniture on carpet


(Q).
Choose between "Juan after a hospital stay" and  "Juan when healthy". Question: Juan is injured in a car accident, which necessitates a hospital stay where he is unable to maintain the strength in his arm. Juan notices that his throwing arm feels extremely frail compared to the level of strength it had when he was healthy. If Juan decides to throw a ball with his friend, when will his throw travel less distance? (A) When Juan's arm is healthy (B) When Juan's arm is weak after the hospital stay.
(A).
Juan when healthy


Ques:Choose between "grassy yard" and  "rocky yard". Question: Janet is mowing her lawn and is pushing the lawnmower easily over her grassy yard. The lawnmower slows down when she pushes it across her rocky yard. The rocky yard has (A) higher resistance (B) lower resistance.

Ans:grassy yard


Ques: Choose between "dance floor" and  "living room floor". Question: Jim's dress shoes slide around more on a dance floor then on his living room floor. This means his dress shoes move faster over the (A) dance floor (B) living room floor
Ans:
dance floor