A boy and a girl are riding a merry- go-round which is turning ata constant rate. The boy is near the outer edge, while a girl i
1 answer:
Answer:
The correct answer is
1. the boy 2.
Explanation:
Since Tangential acceleration = v²/r then the
v = ωr and v² = ω²r² then the tangential acceleration = ω²r²/r = ω²r
This shows that since ω is the same for both of them, the boy with greater r has the most acceleration.
The tangential acceleration α·r
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Answer:
, the minus meaning west.
Explanation:
We know that linear momentum must be conserved, so it will be the same before () and after (
) the explosion. We will take the east direction as positive.
Before the explosion we have .
After the explosion we have pieces 1 and 2, so .
These equations must be vectorial but since we look at the instants before and after the explosions and the bomb fragments in only 2 pieces the problem can be simplified in one dimension with direction east-west.
Since we know momentum must be conserved we have:
Which means (since we want and
):
So for our values we have: