At what depth of lake water is the pressure equal to 201kpa?
A. 10m
B. 20m
C. 5.1m
D. none

Explanation:

The question says that "Does a 60 kg person running at 4 m/s have more kinetic energy than a 10 gram projectile at 300 m/s ? "

Speed of a person is 4 m/s

Mass of a person is 60 kg

Kinetic energy of a person is :

So,

Mass of a projectile is 10 grams or 0.01 kg

Speed of a projectile is 300 m/s

Kinetic energy of a projectile is :

So, it is clear that the kinetic energy of a person is more than that of the kinetic energy of a projectile.