Which one of the following expressions gives the magnitude of a vector whose…

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Kinematics · Kinematics

Problem

Which one of the following expressions gives the magnitude

R

of a vector whose rectangular components are

R_x

and

R_y

? (a)

R = R_x + R_y

(b)

R = \dfrac{R_x^{2}+R_y^{2}}{2}

(c)

R = \sqrt{R_x^{2}+R_y^{2}}

(d)

R = \sqrt{\dfrac{R_x^{2}+R_y^{2}}{2}}