Answer:
The transfer of energy is perpendicular to wave motion.
Explanation:
There is two type of waves in which the classification is done by medium motion of particles.
1) Transverse waves : Here the medium molecules will move perpendicular to the wave propagation. So we can say that here energy is transferred perpendicular to the propagation of wave.
2) Longitudinal waves : Here medium molecules will move parallel to the wave propagation. So here we can say that medium molecules will oscillate parallel to the wave propagation.
So here when girl jump on the stretched string then in that case the wave propagated in the string will be transverse wave and hence the correct answer will be
The transfer of energy is perpendicular to wave motion.
