Question Detail

PHY 101 Kinematics in Two Dimensions Objective Question

Question

A projectile is launched at an angle θ₀ above the horizontal. Its initial vertical velocity component, v_{0y}, is given by
Options
A v₀ cos θ₀
B v₀ sin θ₀
Correct Answer
C v₀ tan θ₀
D v₀ / sin θ₀
Correct Answer

Option B is the correct answer.

Detailed Explanation

When resolving the initial velocity vector v₀ into its components, the side opposite to the launch angle θ₀ represents the vertical component. Using trigonometry, v_{0y} = v₀ sin θ₀.

Hint

Draw a right triangle with v₀ as the hypotenuse. Which component (vertical or horizontal) is opposite the angle θ₀?

Question Info