Question

Two vectors of equal magnitude P make an angle of 0° between them. What is the magnitude of their resultant?

Options

• P

• 2P

• P√2

• 0

Answer 1

2P

Explanation:

When θ = 0°, cos 0° = 1, so R = √(P² + P² + 2P² × 1) = √(4P²) = 2P.