What is instantaneous acceleration?

Explanation:

Instantaneous acceleration is the acceleration at a particular instant.  Mathematically, it is the first derivative of velocity, dv/dt.

Average acceleration, on the other hand, is the acceleration over a period of time.  It is the change in velocity divided by the length of time, Δv/Δt.

answer:   you might love summer weather, but you don’t want it to feel like the sun is inside your car. but a hot car that just won’t seem to cool down might be a bigger of a problem than you think. your car relies on being at the right temperature.

explanation:

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27