A car travels down a highway at 25 m/s. An observer stands 150 m from the highway.

(a) How fast is the distance from the observer to the car increasing when the car passes in front of the observer? Explain your answer without making any calculations.

(b) How fast is the distance increasing 20 s later?

Question

A car travels down a highway at 25 m/s. An observer stands 150 m from the highway.

(a) How fast is the distance from the observer to the car increasing when the car passes in front of the observer? Explain your answer without making any calculations.

(b) How fast is the distance increasing 20 s later?

linknissan · Answer

see the person is @ d rest so the net velocity of the car is the velocity with wch he see's it..the the person was mobing then relative velocity wud ve come to the concept here

anonymous · Answer

For (a), at the precise instant the car is passing the observer, the observer is exactly 150 meters from the road, and the car's motion is neither bringing it closer to or farther from the observer.  That's only true at that precise moment though...|dw:1349990979361:dw|