Question Detail
Question
A body moves in an x-y plane with velocity v m/s. The components of v are v_x = 5 m/s and v_y = 7 m/s. What is the angle the velocity vector makes with the x-axis?
Correct Answer
Option C is the correct answer.
Detailed Explanation
The angle θ with the x-axis is given by tan θ = v_y/v_x = 7/5 = 1.4. θ = tan⁻¹(1.4) = 54.5°.
Hint
θ = tan⁻¹(v_y/v_x).