Atennis ball whose initial speed is 2.0 m/s rolls along a floor for 5.0 m before coming to a stop. find the coefficient of rolling friction.
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Ответ:
Ответ:
net force= 2000-1000=1000
a=v-u/t=5/20=1/4
m=?
m=f/a
=1000÷1/4=4000kg