Answer:
Negative acceleration
Explanation:
We know that
v= u+at
Where v is the final velocity
u is the initial velocity velocity
a is the acceleration
t is time
When final velocity of train will be zero .
v=0
0= u+at
a=- u/t
So from above we can say that acceleration will be negative .When acceleration is positive then train will never come in rest position.
Answer:
<u><em>Frictional force refers to the force generated by two surfaces that contacts and slide against each other.</em></u>
~Hope this helps~ T^T
Answer:
Hello There!
It is Speed.
Because in the question it is said that at which speed car is travelling.
Speed is a scalar quantity.
If it is velocity then first know this that it is a vector quantity.
It must include both magnitude and direction.
If it is velocity then it would be 40 mph east or west or north or south.
<h2>I hope it is helpful to you...</h2><h3>Cheers!_____________</h3>
Power = (1000 kilo-Watt-hr/mo) x (1000/kilo) x (mo/30day) x (day/24 hr)
Power = (1000 x 1000 / 30 x 24) (kilo-watt-hr-mo-day/mo-kilo-day-hr)
Power = (1,000,000/720) watt
(voltage x current) = (1,000,000/720) watts
120v x current = (1,000,000/720) watts
Current = 1,000,000 / (720 x 120) Amperes
<em>Current = 11.57 Amperes</em>