Answer:
d. Every second, the truck’s velocity increases by 3 km/h to the south.
Explanation:
Acelleration can be defined as change of velocity over change of time.
That's why if we say: "A truck accelerates 3 km/h/s south."
We are saying that the acceleration of the truck variate 3Km/h wich is velocity of the truck, and it variates every second and also its direction is south.
Peak voltage is 2
period is 40ms
frequency = 1/period = 25Hz
i saw this online but i am not sure about it
thats why i looked it up i did not want you to stay without help :)