Constant velocity means............
applied force=frictional force=p=kinetic friction coefficient*mg=0.26*10*9.8=?
now we know .... work=force*distance=0.26*10*9.8*0.87joule
plz feel free to ask if u hv any confusion!!
<span>C. Rationing
....................</span>
Answer:
360 km/h
Explanation:
Velocity =Distance/time ⇒ distance = velocity×time
Distance for 1st 2 h = 400×2 = 800 km
Distance for next 1 h = 300×1 = 300 km
Distance for last 2 h = 350×2 = 700 km
Therefore total distance traveled = 1800 km
So average speed = 1800/5 = 360 km/h
I am pretty sure its B i hope i helped ;p but sry if i got u wrong