Answer:2meter
Explanation:
Velocity=1000m/s
Frequency=500Hz
wavelength=velocity ➗ frequency
Wavelength=1000 ➗ 500
Wavelength=2meter
A. transfers energy to another atom or molecule.
After 2 seconds the particle will be in position

After 5 seconds the particle will be in position

So, the particle will travel

meters in 3 seconds, for an average speed of

In a distance time graph, when the x and y values are positive (in first quadrant), the runner is moving forward.
While, if the distance value ( in the y axis) is negative, the runner is moving backwards ( towards the start) .
Hope it helps :)