Answer:
Explanation:
Given
mass 
Force 
door knob is located at a distance of r=0.8 m from axis
Angular acceleration of door 
Torque 
where I=moment of inertia


Explanation:
Terminal velocity is given by:

Here, m is the mass of the falling object, g is the gravitational acceleration,
is the drag coefficient,
is the fluid density through which the object is falling, and A is the projected area of the object. in this case the projected area is given by:

Recall that drag coefficient for a horizontal skydiver is equal to 1 and air density is
.

Without drag contribution the motion of the person is an uniformly accelerated motion, thus:

B- Same force
It’s b because force always acts in equal but opposite pairs.
Answer: C
<span>
The Smith System is one of
the earliest forms of space management that was invented by Harold Smith. <span> He </span>established the Smith
System Driver Improvement Institute to help prevent collisions caused by bad
driving habits. The earliest strategies of Smith system includes the following:
aim high in steering, keep your eyes moving, get the big picture, make sure
others see you and leave yourself an out where you can escape
from your current path of travel when potential mistakes on the road happen.</span>
Answer:
It is because it is a unit of Power(which is a derived quantity)