While playing catch with your sister, you accidentally throw a tennis ball past her and horizontally out the window of your third floor apartment. If a window washer is startled by the passing tennis ball and drops her sponge from rest at that very moment, which describes the subsequent motion of the tennis ball and sponge? (you may ignore air resistance)
A. The tennis ball hits the ground first.
B. The tennis ball and sponge hit the ground at the same time.
C. The sponge hits the ground first.
D. None of the above.
Tamika is rearranging her furniture in preparation for having guests over. She exerts a constant force F to push her couch from one side of the living room at position s1 the other side of the living room at position s2. However, she decides it's not great to have the couch all the way on one side of the room, so she pushes it back away from wall a bit to position s3, again with force F. Which equa-tion describes the total work done by Tamika?
A. W = F (2s2 - s1 - s3)
B. W = F (s2 - s1 - s3)
C. W = F (s3 - s1)
D. W = F (s2 - s1)
1 answer
W=f (s2- s1 -s3)
1 answer