An object of mass moves eastward at relative to Observer A

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

Problem

An object of mass

1.5\,\text{kg}

moves eastward at

4.0\,\text{m/s}

relative to Observer A. Observer B travels eastward at

2.0\,\text{m/s}

relative to Observer A. What is the ratio

K_A / K_B

of the kinetic energy measured by Observer A to that measured by Observer B? (a)

2

(b)

0.25

(c)

4

(d)

1