The initial effort to get something moving seems greater than the effort required to maintain its motion. Why?
Why is it harder to push a stalled car into motion than to keep it moving?
پاسخ ها: {{ repliesNum }}
پاسخ انتخاب شده
در پاسخ به: {{ reply.reply_to.name }}
در پاسخ به
این پیام حذف شده است.