A photogate can be used to accurately measure the time interval for an object to

Question

A photogate can be used to accurately measure the time interval for an object to break its beam. If you wanted to know the average velocity of the object for its trip through a photogate, what additional information would you need? (0.5 points) 3. 4. A very classic physics scenario goes as follows: A Park Ranger shoots a tranquilizing dart at a monkey that is hanging from a branch. The ranger aims directly at the monkey, but the monkey sees the dart leave the gun and immediately drops to the ground to avoid being hit. Will the monkey be hit anyway? Defend your answer with proper use of physical principles. (Assume the dart has sufficient velocity to reach the monkey). (0.5 points)

Explanation / Answer

According to the given problem,

3.) you'd need to know the Photogates' displacement from one another, since average velocity is x/t.

4.) As we discussed and demonstrated in class, think of the motion of both dart and monkey if we could somehow turn gravity "off" and fire the dart. Then the dart would move along a straight line and hit the monkey who would remain in place beside the tree branch. Now turn gravity back "on" and fire the dart. Now both dart and monkey fall from their "gravity-off positions" by 1/2 g t2 so the monkey will, again, be hit by the dart.

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