Recent content by kristy_vincen

The question is BASICALLY: A ball is rolling on a cement floor (accelerating). Determine the friction force required to stop the ball. Of course it gives you the weight and speed of the ball, and I believe i know the answer. I just want to check it. If I figure out the magnitude of of...

Okay, so, I'm looking for the distance between the start and the finish. d = d2-d1 d = 140 - 80 d = 60km [N] Please tell me that's correct!

A boat which travels 100km[N], then 40km[N], and finally 80km [S]. The entire trip takes 6.5 hours. Calculate the total displacement of the boat d = d2-d1 d = (-80) - 140 d = -220 d = 220km[S] Just want to make sure this is correct. Thanks