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...
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