Science (Force and motion)
posted by maria .
Explain how acceleration can be slowing down.
Calculate the impact force of a 50 kg object travelling at 100km/hr.
(Momentum = mass x velocity)
Calculate the momentum of a tennis ball of 50 g moving at a velocity of 25m/s.

You might begin here:
http://search.yahoo.com/search?fr=mcafee&p=how+can+acceleration+be+slowing+down
calcu lating impact force:
http://search.yahoo.com/search?fr=mcafee&p=how+to+calculate+impact+force
how to calculate momentum:
http://search.yahoo.com/search?fr=mcafee&p=how+to+calculate+momentum
Sra