Q. A toy rocket is launched vertically, from rest, from ground level (y = 0), at t = 0. The rocket engine provides constant upward acceleration during the burn phase. At the instant of engine burnout, the rocket has risen to 52 m and acquired a velocity of 40 m/s. The rocket continues to rise in unpowered flight, reaches maximum height and falls back to the ground.
Q. If two waves with equal amplitudes and wavelengths travel through a medium in such a way that a particlar partical of the medium is at the crest of one wave and at the trough of the other wave at the same time, what will happen to that particle?