PLEASE help me with my physics homework!!!?
2.) Two cars approach each other on the highway. Car A moves north at 90 km/hr while Car B moves south at 70 km/hr. (a) What is the velocity of car A as seen from car B? (b) What is the velocity of car B as seen from car A? (c) What are their velocities relative to car C, which is traveling north at 100 km/hr?
THANK YOU TO ALL WHO HELP!!!
Favorite Answer
They want you to draw a triangle with the hypotenuese being 320 km/hr and a leg being 70 km/hr. then computer the other leg… 312.25 km/hr. that means traveling 1590 km will take 5.092 hrs – or late… but not late by FAA rules.
2) a) add the velocities 160 km/hr. If you travel in teh same direction as another car at teh same velocity, the other car never changes position relative to you. If you didn’t know you were moving, you’d think the other car wasn’t moving. In this problem, they are moving in opposite directions, so you add the velocities. Moving in the same direction you subtract them.
(b) same relative velocity.
(c) CarA will appear to befalling behind or a relative velocity of -10 km/hr, and CarB will appear to be moving 170 km/hr
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