Recent content by talknerdy2me

oh duh! ok so ... 22. 135 m/s?

Homework Statement The kinetic energy of a 20N object is 5.00 x 10^2 J. What is the speed? Homework Equations Ek= 1/2 mv^2 and *i think* F=mg The Attempt at a Solution F=mg m=F/g m=20N/9.81 m/s^2 m= 2.038 kg Ek= 1/2 mv^2 v=sq. root 2Ek/m v=sq. root 2(5.00 x 10^2 J)/2.038 kg v= 490 m/sIs...

Yes I am scaler = no direction and vector = with direction.

Homework Statement While a string is attached to a ball and the ball moves in a horizontal circle at a constant speed, does the force change both the direction and speed of the ball? Explain. Homework Equations No equations necessary. The Attempt at a Solution *I think* the force changes...

This is my very first post - so i hope I don't break any rules - its more of a formula rearranging question/confirmation so here goes... Homework Statement Currently working on friction - static/kinetic - so in my textbook it states in a side bar "info bit" that tanθ=sinθ/cosθ my...