How much work is required for a 30 kg dog to pull a sled 50 meters?

The work required can be calculated using the formula:

Work = force x distance

The force required to pull the sled can be calculated using the formula:

Force = mass x acceleration

Given:
Mass = 30 kg
Acceleration (assuming the sled is on a flat, frictionless surface) = 9.8 m/s^2
Distance = 50 meters

Force = 30 kg x 9.8 m/s^2 = 294 N

Work = 294 N x 50 m = 14,700 Joules

Therefore, the work required for a 30 kg dog to pull a sled 50 meters is 14,700 Joules.