Sphere A has mass and speed

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

Problem

Sphere A has mass

2m

and speed

v

. Sphere B has mass

m

and speed

2v

. Which relation between their kinetic energies

K_A

and

K_B

is correct? (a)

K_A = K_B

(b)

K_A = 2K_B

(c)

K_B = 2K_A

(d)

K_B = 4K_A