Answer:
sound energy is form of mechanical energy.Sound travels as waves of energy, but, unlike light, the waves transmit energy by changing the motion of particles. ... That means that each individual particle is only moving a short distance.
Answer: equal to one
Explanation:
Because is the sum of the relative frequencies.
First, let's convert the initial speed of the rhino:
![v_i = 50 km/h = 13.9 m/s](https://tex.z-dn.net/?f=v_i%20%3D%2050%20km%2Fh%20%3D%2013.9%20m%2Fs)
The acceleration of the rhino is given by:
![a= \frac{v_f-v_i}{t}= \frac{0-13.9 m/s}{0.5 s}=-27.8m/s^2](https://tex.z-dn.net/?f=a%3D%20%5Cfrac%7Bv_f-v_i%7D%7Bt%7D%3D%20%5Cfrac%7B0-13.9%20m%2Fs%7D%7B0.5%20s%7D%3D-27.8m%2Fs%5E2%20%20)
where the negative sign means it is a deceleration. We can neglect the negative sign since we are interested only in the magnitude of the force applied, which is given by Netwon's second law: