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juju323261
05.07.2020 •
Physics
An archer shoots an arrow toward a 300-g target that is sliding in her direction at a speed of 2.10 m/s on a smooth, slippery surface. The 22.5-g arrow is shot with a speed of 37.5 m/s and passes through the target, which is stopped by the impact. What is the speed of the arrow after passing through the target
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Ответ:
The speed of the arrow after passing through the target is 30.1 meters per second.
Explanation:
The situation can be modelled by means of the Principle of Linear Momentum, let suppose that the arrow and the target are moving on the same axis, where the velocity of the first one is parallel to the velocity of the second one. The Linear Momentum model is presented below:
Where:
The final speed of the arrow is now cleared:
If
,
,
,
and
, the speed of the arrow after passing through the target is:
The speed of the arrow after passing through the target is 30.1 meters per second.
Ответ:
C
Explanation:
GPS satellites in Earth's orbit constitute the most common way that images of space are captured.
I hope this helps! And this is the real answer.