Kinetic energy of any object = (1/2) (object's mass) (object's speed)²
Arrow's kinetic energy = (1/2) (0.217 kg) (100 m/s)² = 1,085 Joules
Pumpkin's kinetic energy = (1/2) (3.75 kg) (7.25 m/s)² = 98.5 Joules
== 1,085 Joules is more than 98.5 Joules.
==> The arrow has more kinetic energy than the pumpkin has.
