Starting from rest, the distance a freely-falling object will fall in 0.50 second is?

1.23 m

Explanation:

The vertical distance covered by a free-falling object starting from rest in a time t is

where

g = 9.8 m/s^2 is the acceleration due to gravity

In this problem, we have

t = 0.50 s

So the distance covered is

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