Example? I see none, so I'll make up my own.
An example of kinetic energy, is like bicycle riding down a hill.
Kinetic energy, is basically <em>moving</em> energy.
Hope this helps!!!:)
Answer:
Resultant amplitude is 0.53 m.
Explanation:
Amplitude is defined as the maximum displacement of wave particles from their respective mean positions.
The resulting amplitude of any two waves is given by the relation :
A =
Here, A is resultant amplitude, A₁ and A₂ are the amplitudes of two waves respectively and x is the difference in phase angle of the two waves.
According to the problem, A₁ is 0.4 m , A₂ is 0.23 m and x is zero. So, the above equation becomes,
A =
A =
A = 0.63 m
The instantaneous velocity is at a given instant in time while the average is calculated over the time interval of the entire journey. The instantaneous velocity can be determined by finding the gradient of the displacement/time graph while average velocity is given by total distance covered divided by total time taken.
Answer: Option D
We know that speed is defined as the derivative of the position with respect to time. The derivative shows the slope changes that occur in the graph of the function shown.
Observe the attached image.
Notice that at the beginning the graph resembles a line whose slope is constant. This means that during this time interval (t1) the speed is approximately constant and greater than zero. Then we observe a time interval during which the function is approximately horizontal, parallel to the time axis. In this interval (t2) the slope is approximately 0. This means that in this interval the velocity is approximately 0. Finally, the graph has a positive and large slope. This means that during the last time interval (t3) the speed increases. Therefore the correct option is D.
D. The velocity decreases, then increases.