If a glass is knocked off of a table that is 1.4 m tall, how long does it take for the glass to hit the ground? sorry im having so much trouble can anyone explain what to do

The formula we can use in this case would be:

h = vi t + 0.5 g t^2

where h is height, vi is initial velocity = 0 since started from rest, g is gravity

Therefore calculating for t:

1.4 m = 0.5 * 9.8 m/s^2 * t^2

t^2 = 0.2857 s^2

t = 0.53 seconds

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

first thing first of the answer is with technology. second thing second thing is that the big bang theory did not happened u see they say it did but what they dont realize is that like dinasures are still a round they might deny it but they and look at these 12 foot human skelteons they find lets see didnt the bible say something about giants. hope this peace.