A bus starts from rest and moves in constant acceleration 2 m/s². calculate it's time of travel if its final velocity is 20m/s.​

10 s

Explanation:

u  =  0 m/s

v  =  20 m/s                          

a  =  2 m/s²                          

t   =  ?                                

                                  a  =    

                                  2  = (20 - 0)/ t

                                  t   =  10 s

5 w for 1hr = 5x60x60 joules=300x60=3000x6=18,000j as total energy conversion. efficiency of bulb needed for radiant to thermal within 18000