|Dec18-11, 07:33 PM||#1|
Magnitude of an Impulse
A(n) 0.445 kg football is thrown with a speed
of 15.1 m/s. A stationary receiver catches the
ball and brings it to rest in 0.012 s.
What is the magnitude of the impulse de-
livered to the ball?
Answer in units of kg · m/s
i used f= ma since a= Δv/t
i got F= .445 kg * 1258.3 ms^-2= 559.94
BUT THIS IS WRONG. any help would be nice 0,o
maybe my understanding of an impulse is wrong?
|Dec18-11, 08:35 PM||#2|
You found the force. The question asked for impulse. Use impulse = m*Δv or F*Δt
|accceleration, magnitude of impulse, momemtum|
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