Posted by jonathan on Friday, November 5, 2010 at 9:21am.
This is really a too simple problem.
change of momentum= mass(change in velocity).
average force=changemomentum/timeimpact
for part a i got change in momentum right which was 1.8 then when i divided that by 4.05E-3 i got 4.44E-4 and it was marked wrong
I used the same equation as you did for average force, but when I divided change in momentum by time of impact I got 444.
averageforce=changemomentum/timeimpact
=(1.80)/(4.05*10^3)
= 444.4
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