Thursday
March 30, 2017

Post a New Question

Posted by on .

Imagine a motorcycle rider moving with a speed 0.7c past a stationary observer. If the rider tosses a ball in the forward direction with a speed of 0.6c, relative to himself, what is the speed of the ball as seen by the stationary observer? Ans in units of c.


The addition of velocities formula says
(u+v)/(1+uv/c^2)
You can do it all in units of c, so plug in u=0.7 and v=0.6 to get approximately 0.92.

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question