The position of a particle is given by

PHYSICS · Single correct · ISC · Physics · Kinematics · Kinematics

Problem

r(t)=\langle 5\cos t,\,5\sin t,\,12t\rangle

. What is the speed of the particle for any value of

t

? (a)

\sqrt{25+144t^{2}}

(b)

17

(c)

13

(d)

12