An 80 kg man standing at rest on a smooth, level ice surface throws a 200g ball horizontally with a speed of 25 m/s, relative to the Earth. a) With what speed and in what direction does the man move? b) If the man throws six such balls every 5.0s, what is the average force acting on him?
The Attempt at a Solution
I got part a using the conservation of momentum equation, but I don't get how to do b.
Can anyone help?