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John Hunter
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As it's a homework question here is a hint:

Imagine Ant A is stationary (it could be)...

The let's say B moves a small distance, any directionalong the line AB. How would this change distance AB?

Then, what would this mean for how distance AC has to change, and in what direction must C move - then what would that mean for what $V_C$ has to be (in terms of $V_B$)?

This seems to rule out three of the options.

As it's a homework question here is a hint:

Imagine Ant A is stationary (it could be)...

The let's say B moves a small distance, any direction. How would this change distance AB?

Then, what would this mean for how distance AC has to change, and in what direction must C move - then what would that mean for what $V_C$ has to be (in terms of $V_B$)?

This seems to rule out three of the options.

As it's a homework question here is a hint:

Imagine Ant A is stationary (it could be)...

The let's say B moves a small distance, along the line AB. How would this change distance AB?

Then, what would this mean for how distance AC has to change, and in what direction must C move - then what would that mean for what $V_C$ has to be (in terms of $V_B$)?

This seems to rule out three of the options.

Source Link
John Hunter
  • 13.8k
  • 2
  • 25
  • 56

As it's a homework question here is a hint:

Imagine Ant A is stationary (it could be)...

The let's say B moves a small distance, any direction. How would this change distance AB?

Then, what would this mean for how distance AC has to change, and in what direction must C move - then what would that mean for what $V_C$ has to be (in terms of $V_B$)?

This seems to rule out three of the options.