Explanation:
The U.S. launched its first man into space in May 1961.
Answer:
so, why we have to find here..
<h3>stay safe healthy and happy.</h3>
This room is called Substation
The correct answer to this qustion is velocity and time
The correct option is B.
The length of an object, the mass of an object and the rate of time passage for an object can change depending on the situation which the object is subject to. For instance in space, the mass and the velocity of an object usually change. But, the value of the speed of light in the space is the same for all observers regardless of the motion of an object, that is, the speed of light is a constant.<span />
