Answer: A hurricane watch is issued 48 hours in advance of the anticipated onset of tropical-storm-force winds in an area
The correct options are:
A) 0 K
<span>F) the temperature at which motion is at a minimum
In fact, absolute zero corresponds to zero degrees in the Kelvin scale: 0 K. At this temperature, the motion of the molecules of any substance is minimum (it is zero, to be precise).
(note: there are some weird signs in the answers. if there is a negative sign in front of </span>
in option D), then option D is correct as well, because
).
Answer: the rider’s pedal force must be greater than friction and the force of gravity
Explanation:
This is because if the pedal force was less, you would go slower, and it is obviously not impossible to ride up a hill without increasing speed. But if the force was greater, your speed would increase.
First convert 90km/hr to m/s.
Initiate velocity = 0m/s (car was at rest)
Final velocity is 25m/s (90km/hr converted)
25m/s - 0m/s / 8s = 3.125 m/s^s
Therefore the answer is option A (3.13m/s^2)