Procedure Step 1: Throw an egg to another person. The other person must catch th
ID: 1773764 • Letter: P
Question
Procedure Step 1: Throw an egg to another person. The other person must catch the egg in such a way that the egg does not break. This is relatively easy to do for a short distance but more difficult for longer distance. The key for preventing the egg from breaking is to prolong the stopping time; that is to catch the egg with a gradual-stop catch rather than a sudden-stop catch Step 2: Increase the separation distance between you and your partner and then try to catch the egg. Step 3: Repeat step 1 and 2 until the egg breaks Summing Up 1. How far apart you and your partner when the egg broke? 2. What was the trick to prevent the egg from breaking? 3. Is the mass of the egg greater during a sudden stop to a gradual stop? Or is it the same? 4. Is the change in velocity greater during a sudden stop or gradual stop? Or is it the same? 5. Is the stopping time greater during a sudden stop or gradual stop? Or is it the same? 6. Is the stopping force greater during a sudden stop or gradual stop? Or is it the same? 7. Give some examples of changing stopping time to change stopping force?Explanation / Answer
a) The first question has no data so we cannot make the exact calculation. But here we can say that if you are beyond the distance of the throw of your are partner then egg would definitely break. say anything beyond 50m of throw.
b) The trick is application impulse momentum theorem. The time of catch is increases so that force on the egg is reduced so that the change in momentum is unaltered.
c) The mass of the egg does not change by distance. It is a constant
d) The final velocity and intial velocity are indepedent of the sudden stop or gradual stop. The change in velocity of the egg remains constant. The change in velocity of the catch (hand motion) is different here
e) The stopping time is greater for a gradual stop than sudden stop
f) The stopping force is greater for a sidden stop than gradual stop
g) Air bags in the car used as safety measure work under impusle momentum . Pinch hitting of the batter in baseball
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