A1 kg ball is dropped from the top of the cliff and falls with constant acceleration due to gravity. by how much has the ball's gravitational potential energy changed after it has fallen by 10 meters? how fast is the ball falling after it has fallen by 10 meters? how much work has been done on the ball?

1) 0.0302 joules

2) 1.414s

3) 99.9698 joules

Explanation:

0.96 kWh

Explanation:

First of all, we can find the power of the appliance using the formula:

where

V = 120 V is the voltage of the source

I = 2 A is the current

Substituting,

Now we want to find the amount of energy used by the applied in a time of

t = 4 h

The amount of energy is given by

where

P = 0.24 kW

t = 4 g

Substituting,