Question Detail

PHY 101 PHY 101 Past Questions Objective Question
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Question

A car is traveling eastward at 40 m/s. A 30 m/s wind is blowing southward. What is the direction of the car relative to its original direction?
Options
A 50 m/s at 36.9° east of south
Correct Answer
B 40 m/s at 36.9° east of south
C 30 m/s at 36.9° east of south
D 70 m/s at 36.9° east of south
Correct Answer

Option A is the correct answer.

Detailed Explanation

The resultant velocity is 50 m/s at an angle of 36.9° south of east (or 53.1° east of south).

Hint

Use vector addition: magnitude = √(40² + 30²), direction = arctan(30/40) south of east.

Question Info

Course: PHY 101
Topic: PHY 101 Past Questions
Type: Objective
Difficulty: Not specified
Question 184 of 1250
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