2. A 50.0 kg shell was fired from a cannon at earth's surface to a maximum height of 400. m.
a. What is the potential energy at maximum height?
b. It then fell to a height of 100. m. What was the loss of PE as
it fell?

a) 196000 Joules

b) 147000 Joules

Explanation:

a. Potential energy is the energy possessed by an object by virtue of its position.

m= mass of object = 50.0 kg

g = acceleration due to gravity =

h = height of an object = 400 m

Putting in the values we get:

Thus the potential energy at maximum height is 196000Joules.

b.    

Thus loss in P.E = (196000Joules-49000Joules) = 147000 Joules

hi there!

your question asks at which segment does freezing occur.

since we're talking about water, the freezing point of water will be 32 degrees fahrenheit or below.

hope this ! ~