Answer:

1316.90559 m
Explanation:
= Time measured in the laboratory
= Time measured in its own frame of reference = 
c = Speed of light = 
v = 0.91 c
Time dilation is given by

The average lifetime is measured in the laboratory is 
Distance measured would be

The distance is 1316.90559 m
Answer:
The total distance at 7 s is:

Explanation:
<u>Distance due to the force</u>
We can use second Newton's law to find the acceleration.


Now, using the kinematic equation we will find the distance during this interval of time. Let's recall that the initial velocity is zero.



In the second part of the motion, the object moves at a constant velocity, as long as there is no friction between the object and the floor.
First, we need to find the final velocity of the first interval

So the second distance will be:

Therefore, the total distance is:

I hope it helps you!
Sis re read it and try it guess it give it your best shot
Answer: the average position of all the parts of the system, weighted according to their masses.
Explanation: