If you drop a pencil while riding on a smooth riding bus, why does the pencil land at the same place it would if the bus were at rest?
What will be an ideal response?
Answer: In accord with Newton's first law, since in both cases there is no horizontal force on the dropped pencil, no change of velocity occurs horizontally. The dropped pencil in the moving bus simply keeps up with you as you move, not changing its velocity in the horizontal direction.
You might also like to view...
The softening point for the soda-lime glass in Figure 9.3 is approximately _________K.
Fill in the blank(s) with the appropriate word(s).
What role does hydrogen play in spectral classification?
What will be an ideal response?
Three boxes in contact rest side-by-side on a smooth, horizontal floor
Their masses are 5.0-kg, 3.0-kg, and 2.0-kg, with the 3.0-kg box in the center. A force of 50 N pushes on the 5.0-kg box, which pushes against the other two boxes. (a) Draw the free-body diagrams for each of the boxes. (b) What magnitude force does the 3.0-kg box exert on the 5.0-kg box? (c) What magnitude force does the 3.0-kg box exert on the 2.0-kg box?
A Carnot engine
A. consists of zero heat flow and constant pressure processes. B. consists of only processes which do not involve heat flow. C. consists of only isothermal processes. D. absorbs heat at a single high temperature and rejects heat at a single low temperature. E. consists of constant temperature and constant volume processes.