A new fun foam target on wheels for archery students has been
invented. The arrow of mass, m, and speed, vo, goes through
the target and emerges at the other end with reduced speed,
vo/2. The mass of the target is 7 m (mass of arrow). Ignore
friction and air resistance. What is the final speed of the target?
a
vo/35
b vo/7
C
vo/14
d
vo/21