Answer:
15 km/s from the starting point
Explanation:
Velocity is total distace divided by total time.
From the picture, you can see that line consecutively traveled 30 kilometers- in 2 seconds.
(9 to 11 is two seconds, unless I'm wrong.)
So, total distance = 30 km. Total time = 2 seconds.
30/2 is 15.
the velocity of line A is 15 km/s from the starting point.
There's a normal amount of condensation when a AC is running. If it's dripping on the floor, look for the white PVC pipe that is supposed to be there to drain it. If it's coming from inside the unit, call a repair person.
Answer:
Explanation:
In the vertical, air resistance reduces the maximum height attained and therefore also the time of the flight.
In the horizontal, air resistance reduces the range due to direct action and indirectly because the time of flight is reduced due to vertical air resistance.
Answer: 4.98 m/s
Explanation:
You solve these kinetic energy, potential energy problems by using the fact P.E.+ K.E. = a constant as long as friction is ignored.
PEi = 0 in this case
KEi = ½mVi² = PEf+KEf = mghf + ½mVf²
½1210*8.31² = 1210*9.8*2.26 + ½1210*Vf²
½1210*Vf² = ½1210*8.31² - 1210*9.8*2.26
Vf² = 8.31² - 2*9.8*2.26 = 4.98² so Vf = 4.98m/s