| Nefarious
Nofingers Ned, the knife-flinging nabob of Nashville, Nebraska, has
turned the tables on his neighbor, Dapper Dan.
Ned is an expert...something spurts every time he throws! If Ned throws his 400-g knife with a force of 80 N acting over a time of 0.2 seconds, with what velocity does the knife leave his hand? |
Impulse equals change in momentum.
Impulse = Ft = (80 N)(0.2 s) = 16 Ns = 16 kg-m/s v = (mv) / m
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