Two spaceships approach the earth from opposite directions. according to an observer on the earth, ship a is moving at a speed of 0.753c and ship b at a speed of 0.851c. what is the velocity of ship a as observed from ship b

Explanation:

It is given that,

Speed of ship A,

Speed of ship B,

Let is  the velocity of ship A as observed from ship B. It can be calculated using the formula as :

Substituting all the values in above formula as :

So, the velocity of ship A as observed from ship B is 0.977c. Hence, this is the required solution.

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.