Question

a bulldozer is moving forward at 3.00km per hour (3km/h) exerting a thrust of 15*10^3 as it does. what's its power

Answer 1

Convert km/h to m/s:

$$v=3·1000/3600=0.833\text{ m/s}.$$

Assume the unit of the thrust is N ($F=15000 \text{ N}$). Then the power is

$$P=Fv=12.5\text{ kW}.$$