Answer:
Velocity is a change in displacement over change in time and uses the units m/s.
Both are rates of change and can be positive or negative.
Acceleration is a change in velocity over change in time and uses the units m/s².
Explanation:
Velocity is the change in displacement over change in time, this makes it a rate of change. It can be positive or negative because it is a vector quantity. It uses the units m/s because that is a displacement unit over a time unit.
Acceleration is the change in velocity over change in time, this makes it a rate of change. It can be positive or negative because it is also a vector quantity. It uses the units m/s² (m/s/s) because that is a velocity unit over a time unit.
Energy I believe. If there is no energy given or taken the object will not react.
Answer:
a) d = 6.0 m
Explanation:
Since car is accelerating at uniform rate then here we can say that the distance moved by the car with uniform acceleration is given as
![d = \frac{(v_f + v_i)}{2} \times t](https://tex.z-dn.net/?f=d%20%3D%20%5Cfrac%7B%28v_f%20%2B%20v_i%29%7D%7B2%7D%20%5Ctimes%20t)
here we know that
![v_f = 10 m/s](https://tex.z-dn.net/?f=v_f%20%3D%2010%20m%2Fs)
![v_i = 0](https://tex.z-dn.net/?f=v_i%20%3D%200)
![t = 1.2 s](https://tex.z-dn.net/?f=t%20%3D%201.2%20s)
now we will have
![d = \frac{(10 + 0)}{2}\times 1.2](https://tex.z-dn.net/?f=d%20%3D%20%5Cfrac%7B%2810%20%2B%200%29%7D%7B2%7D%5Ctimes%201.2)
![d = 5 \times 1.2](https://tex.z-dn.net/?f=d%20%3D%205%20%5Ctimes%201.2)
![d = 6.0 m](https://tex.z-dn.net/?f=d%20%3D%206.0%20m)
I don't know if you need to complete this question or do it otherwise, however, I managed to find on the Internet on several places this completion of your sentence:
<span>Electric current flows through a long rod generating thermal energy at a uniform volumetric rate of q = 2 x 10</span>⁶ W/m³.
I'm not sure whether that is the answer you were looking for, but that's what I found.