Recent content by 11thgradephysics

how do i find the coefficient of friction of a block? is it Ff/Fn? the problem is how do i find the friction force?

impulse- momentum Ft = m(Vf - Vi) solve for F

ill try that

i hope that's right, becuase i only started work-energy theorum today

you need to find the parallel force to the plane, not just the weight, Parallel force - friction force or mgsin(teta) - u(normal force) mg*sin(theta) - umg*cos(theta) well, I am new here so i don't know how to neter in symbols like theta, coeficient of friction, ... u= coeff of friction

i don't even know what to start with, any suggestions?

An object is dropped from rest from a height of 200 ft, 300 feet horizontally across from a 200 ft tall light tower. The object's height above the ground at any given time, t, in seconds, is h= 200 - 16t^2 feet. Exactly 2 seconds after it is dropped, what is the rate at which the shadow is...

ahh, it nefver said in my book that max proj is 45 degrees, now i think i can do it

If the initial velocity of a golf ball is 30.3 m/s off the club face, and the tee box is at the same height as the green, what is the longest shot possible? (not inlcuding roll) i have no clue where to start please help? all that i know is initial velocity and accelration due to gravity, so...