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Illusion [34]
3 years ago
7

Car 1 drives 35 mph to the east, and car 2 drives 50 mph to the west. From the frame of reference of car 1, what is the velocity

of car 2?
A. 85 mph west
B. 15 mph east
C. 85 mph east
D. 15 mph west
Physics
2 answers:
Sergio039 [100]3 years ago
4 0
The distance between the two cars is increasing at the rate of 85 mph.

A passenger in Car-1 says that he is at rest in his own frame of reference,
and Car-2 is moving away from him at 85 mph, toward the west.
Radda [10]3 years ago
3 0

Answer:

A. 85 mph west

Explanation:

Velocity of car 1 is given as

v_1 = 35 mph towards East

\vec v_1 = 35(-\hat i) mph

Velocity of car 2 is given as

v_2 = 50 mph towards West

\vec v_2 = 50 (\hat i) mph

Now we need to find the speed of car 2 with respect to the frame of car 1

so it is given as

\vec v_{21} = \vec v_2 - \vec v_1

now we will have

\vec v_{21} = 50 (\hat i) - 35 (-\hat i) = 85 \hat i

so the relative speed will be 85 mph towards West

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