Abu kicks a ball of mass 1.5 kg with a force of 50 N and the time of impact between his boot and the ball is 0.2s .What is the change in momentum of the ball?
Abu menendang sebiji bola berjisim 1.5 kg dengan daya 50 N dan masa perlanggaran di antara but dan bola ialah 0.2 s. Berapakah perubahan momentum bola itu?
A 10Ns
B 15Ns
C 250Ns
D 375Ns
Answer:
F=(mV-mU)/t
50 N = (Change in momentum)/0.2s
(50)(0.2)Ns = Change in momentum
Change in momentum =10 Ns