Answer:
Meter marks are on cut-off portion of stick is 100 - 60 = 40 m
Explanation:
Given data:
Spaceship length of L = 100 m
Relative velocity between the ship and stick is given as

The observed length observed by the outside observer is

putting all value to get observe length
put

L' = 60 m
Meter marks are on cut-off portion of stick is 100 - 60 = 40 m
It is biotic and nest are strong
Complete Question
The complete question is shown on the first uploaded image
Answer:
The value is 
Explanation:
From the question we are told that
The initial point is 
The terminal point is 
Generally the magnitude of the vector is mathematically represented as

=> 
=> 
Gravitational potential energy is the energy stored in an object due to its height above the Earth.
Explanation:
Gravitational potential energy is an energy that an object has as a result of its position in a gravitational field.
For an object which is near to Earth surface is gravitational acceleration is considered to be constant at 9.8 m/s².
Gravitational potential energy is also defined as the amount of work done to move an object having certain mass from one point to another point against gravitational force. It is calculated as mass multiplied by height to which an object is moved.
Some examples are water stored in a dam, ball kept on the top of a ramp, book kept of a shelf, etc.
Speed = (distance covered) / (time to cover the distance)
= (6.4 meters) / (4 minutes)
= (6.4/4) (meter/minute) = 1.6 meter per minute .