The boy’s foot causes the motion. His foot is the one that causes the ball to roll down the hill.
The relevant formula we can use in this case would be:
h = v0 t + 0.5 g t^2
where,
h = height or distance travelled
v0 = initial velocity = 0 since it was dropped
t = time = 1 seconds
g = 9.8 m/s^2
So calculating for height h:
h = 0 + 0.5 * 9.8 m/s^2 * (1 s)^2
<span>h = 4.9 meters</span>
Insulator, or a semi-conductor. A semi-conductor is a specific type of insulator.
The ironwood will because it it more heavy and the others are not
The higher the amount is the more possible it is to sink
Hope this helped