A ball with a smooth surface made to roll
题型:单项选择题
问题:
A ball with a smooth surface made to roll on a very smooth surface would ______
A.remove its surface
B.meet some objects
C.roll a long distance
D.change its direction
A ball with a smooth surface made to roll on a very smooth surface would ______
A.remove its surface
B.meet some objects
C.roll a long distance
D.change its direction