Answer:False.
Explanation: HIV is a viruse that only shows symptoms after a few weeks. in Fact HIV does not show any physical symptoms. So, no you can not tell if someone has or is been infected by HIV by directly looking at them.
Have a Nice Day!!! =)
V = S/t
The time is in minutes, it needs to be converted to seconds, because the Velocity 8.1meters/second.
1 min -------- 60 secs
8.5 min -------- x secs
-> x = 8.5 . 60
-> x = 510secs
-> 8.1 = S/510
-> 510 x 8.1 = S
-> S = 4131 meters
The vector which shows the velocity of the yo-yo at this moment is A and is denoted as option A.
<h3>What is Velocity?</h3>
This is referred to the rate of change of distance with time and the unit is metre per seconds.
A shows the direction of motion is same as the direction of velocity and is the tangent at that particular point hence why it was chosen as the most appropriate choice.
Read more about Velocity here brainly.com/question/6504879
#SPJ1
The sign associated with the average velocity of the object is negative.
<h3>
Average velocity of the object</h3>
The average velocity of the object is calculated as follows;
Average velocity = (v1 + v2)/2
v1 = -20/30 = -0.667 m/s
v2 = 20/50 = 0.4 m/s
Average velocity = (-0.667 + 0.4)/2
Average velocity = -0.134 m/s
Thus, the sign associated with the average velocity of the object is negative.
Learn more about average velocity here: brainly.com/question/6504879
#SPJ1
