PLEASE HELP asap A particle accelerates from rest at 5.2 m/s2
What is its speed 3 s after the particle starts
moving?
Answer in units of m/s.

No because scientist are still changing there mines today so they are not correct to this day

Velocity is the speed of an object in a certain direction so you'd need to know speed and direction

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.