题目内容
一物体在
m==kg=0.2 kg
m===20=20 kg
m===20 kg
m==kg=20 kg
A.m=F/a= kg=0.2 kg B.m=F/a==20=20 kg
C.m=F/a= kg=20 kg D.m=F/a==20 kg
A.m=F/a=kg=0.2 kg
B.m=F/a= =20 kg
C.m=F/a= kg=20 kg
D.m=F/a==20 kg
A.m=F/a=kg=0.2 kg B.m=F/a==20 kg
C.m=F/a=kg=20 kg D.m=F/a==20 kg
A.m=F/a=kg=0.2 kg B.m=F/a= =20=20 kg
C.m=F/a= kg=20 kg D.m=F/a= kg=20 kg