What is the velocity of a dirt bike that travels 450 meters East in 9 seconds?What is my constant velocity, once I set my cruise control, if I go 320 km East in 4 hours?

The velocity of the dirt bike is 50 meters per second East. Constant velocity if you set your cruise control is 80 km per hour.

The answer is 12, for the points

If the heat engine is a perfect carnot cycle engine, thenefficiency = (t2-t1)/t2   where t1=temperature of cold reservoir ( ° k) = 135            t2=temperature of hot reservoir ( ° k)   = 325thereforeefficiency = (t2-t1)/t2 = (325-135)/325 = 0.5846 = 58%  note: this is the theoretical maximum efficiency of a perfect heat engine.   real-life engines do not achieve this value.