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Mathematics 8 Online
OpenStudy (anonymous):

When a 1.0 kg object rest on your foot for 0.10 s, the impulse exerted is -0.98 Ns. It's t/f. The formula for impulse is (Please correct me if I'm wrong) force=(mass*velocity)/time So wouldn't it be force=(1.0*9.8)/0.10 = 9.8/0.10 = 98. Right ? How do you know if it's supposed to be negative ? Or is it negative because it is falling ? I don't know.. Thanks for helping though !

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