A car at rest when light turns green accelerates at 18 m/s in 10 seconds. what is the acceleration.

a=18m/s/10s=1.8m/s^2

Explanation:aceleración es igual a velocidad inicial menos velocidad final, lo mismo con el tiempo, tiempo inicial menos tiempo final (velocidad inicial y tiempo inicial en este caso es cero, ya que 3l auto estaba en reposo).

Fórmula: aceleración es velocidad final menos velocidad incial

entonces:

a=(18m/s)/(10s)

1.8m/s^2

Explanation: acceleration= velocity / time

v=18m/s

t= 10secs

a= 18/10

a= 1.8m/s^2

ill do it for 100, also this isnt 80 its 40

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