Releasing some frustration at the end of the semester, you throw your physics book (mass of 4.3 kg) off of a 24 m tall building. You throw your book so that it has a speed of 3 m/s right after you let go. What is the kinetic energy of your book after you let go? (in J)
12.9
1.01×103
206
0
19.4
How how fast is your textbook moving right before it lands? For now, ignore friction. (in m/s)
21.9
17.5
24.7
21.5
If friction is NOT negligible, and 350 J of the textbook’s energy is converted to thermal energy as it falls, how fast is it moving just before it lands? (in m/s)
17.8
17.5
12.8
25.3
25.0
