Two Clowns Are Launched from the Same Spring-Loaded Circus Cannon $v _ { A } = \frac { 3 } { 2 } v _ { B }$

Multiple Choice

Two clowns are launched from the same spring-loaded circus cannon with the spring compressed the same distance each time.Clown A has a 40-kg mass;clown B a 60-kg mass.The relation between their speeds at the instant of launch is

A) $v _ { A } = \frac { 3 } { 2 } v _ { B }$ .
B) $v _ { A } = \sqrt { \frac { 3 } { 2 } } v _ { B }$ .
C) v_A = v_B.
D) $v _ { B } = \sqrt { \frac { 3 } { 2 } } v _ { A }$ .
E) $v _ { B } = \frac { 3 } { 2 } v _ { A }$ .