Which of the following expressions gives the instantaneous power of a particle in…

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

Which of the following expressions gives the instantaneous power

P

of a particle in terms of its kinetic energy

K

? (a)

P = \dfrac{\Delta K}{\Delta t}

(b)

P = \dfrac{1}{2}\,\dfrac{\mathrm dK}{\mathrm dt}

(c)

P = \dfrac{\mathrm dK}{\mathrm dt}

(d)

P = \dfrac{K}{t}