When you heat ice on a hot stove, the ice melts. what is happening during this process?
2 answers:
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Answer:
17.6 N
Explanation:
The force exerted by the punter on the football is equal to the rate of change of momentum of the football:
where
is the change in momentum of the football
is the time elapsed
The change in momentum can be written as
where
m = 0.55 kg is the mass of the football
u = 0 is the initial velocity (the ball starts from rest)
v = 8.0 m/s is the final velocity
Combining the two equations and substituting the values, we find the force exerted on the ball:
Answer:
<h3>The answer is 80 N</h3>Explanation:
The force acting on the object can be found by using the formula
where
d is the distance
w is the work done
We have
We have the final answer as
<h3>80 N</h3>Hope this helps you