3 kilograms is equivalent to 29.41995008592, round according to what your teacher desires. Hope this helps you and have a wonderful night :)
Other drivers would be the correct answer
Friction- the external force that acts on objects and causes them to slow down when no other external force acts upon them.
That's a longitudinal wave, and a compressional wave.
Answer:
a) 9.8 kJ
b) 8.9 kJ
c) 8.1 kJ
Explanation:
On the first stage, we have:

applying the energy conservation formula:

for stage 2:


for the final stage:

