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 resultant velocity?
Options
A 50 m/s at 36.9° south of east
Correct Answer
B 40 m/s at 36.9° south of east
C 30 m/s at 36.9° south of east
D 70 m/s at 36.9° south of east
Correct Answer

Option A is the correct answer.

Detailed Explanation

Magnitude = √(40²+30²)=50 m/s. Angle = tan⁻¹(30/40)=36.9° south of east.

Hint

Use Pythagoras and tan⁻¹.

Question Info

Course: PHY 101
Topic: PHY 101 Past Questions
Type: Objective
Difficulty: Not specified
Question 171 of 1250
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