Can you please help - the answer I got so far is 7.624 but when I enter it in my homework in Quest, it i stating that this answe
1 answer:
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Answer:
5488 Joules
Explanation:
Use the formula for the potential energy:
Answer:
F=248.5W N
Explanation:
Newton's 2nd Law tells us that F=ma. We will use their averages always. The average acceleration the tennis ball experimented is, by definition:
Since we start counting at 0s and the ball departs from rest, this is just
So we can write:
Where in the last step we have just multiplied and divided by g, the acceleration of gravity. This allows us to introduce the weight of the ball W since W=gm, so we have:
Substituting our values:
Where the average force exerted has been written it terms of the tennis ball's weight W.