i am an idiot: speed = distance/time not time/distance
i also used 85 as the angle, instead of 105...
having fixed this, i seem to have the problem solved:
momentum = mass * (time/distance)
therefore, initial momentum = m (t/0.476)
final momentum1 = m (t/.30) [32 degrees right]
final momentum2 = m (t/.3325) [43 degrees left]
using the cosine law i find total final momentum:
total final momentum^2: [m (t/.30)]^2 + [m (t/.3325)]^2 -...
so here i am doing my physics homework. everythings fine, but then i get this whopper of a problem, which is for major marks, and i can't seem to solve it for some reason. here she is:
a ramp is setup on the edge of a table
a ball slides down this ramp and picks up speed. just as...