A. the same speed as the wave energy
Answer:
300 Nm ; 300 J
Explanation:
Given that:
Force (F) = 20 N
Distance (d) = 15 m
The kinetic energy (Workdone) = Force * Distance
Kinetic Energy = 20N * 15m
Kinetic Energy = 300Nm
K. E = 1/2
Atomic mass= number of protons + number of neutrons

hope this helps
Answer:
18
Explanation:
I'm pretty sure I got it right