Homework Statement
An electron moves to the right with a speed of 0.90c relative to the laboratory frame. A proton moves to the left with a speed of 0.70c relative to the electron. Find the speed of the proton relative to the laboratory frame.
Homework Equations
Vx'=[Vx-V]/[1+(v2/c2)*Vx]...
I'm still not getting the right answer.
Using this, I've come up with
m=[10m*(1000 N-9.81m/s2*kg)]/(8.0m2/s2), which keeps working out to around 154 kg, still way off. What am I missing here?
This problem seems simple, but I can't get the answer:
Homework Statement
Tarzan tries to cross a river by swinging from one bank to the other on a vine that is 10.0 m long. His speed at the bottom of the swing is 8.0 m/s. Tarzan does not know that the vine has a breaking strength of 1000 N...