Objects and each have linear momentum of magnitude 10 kg m s⁻¹

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

Problem

Objects

X

and

Y

each have linear momentum of magnitude 10 kg m s⁻¹. The mass of

X

is 1 kg, while the mass of

Y

is 2.5 kg. Which statement about their kinetic energies is correct? (a)

K_X = 0.4\,K_Y

(b)

K_X > K_Y

(c)

K_X = K_Y

(d)

K_X < K_Y