返回卡包市场
motion and forces
暂无描述。系统推荐的高质量记忆内容，适合每天坚持背诵学习。
卡片总数: 9 张•内容版本: v4•公开卡包•更新时间: 8/1/2026
卡片预览 (9 张)
#1
正面 (问题)
always described relative to something else
背面 (解答)
motion
#2
正面 (问题)
the most common reference point for this is the earth’s surface, unless otherwise stated
背面 (解答)
motion
#3
正面 (问题)
the rate at which an object moves
背面 (解答)
speed
#4
正面 (问题)
the speed of an object in a particular direction
背面 (解答)
velocity
#5
正面 (问题)
velocities in the same direction are
背面 (解答)
added together
#6
正面 (问题)
velocities in the opposite direction are
背面 (解答)
subtracted from each other
#7
正面 (问题)
the rate at which velocity changes
背面 (解答)
acceleration
#8
正面 (问题)
3 ways that velocity can occur
背面 (解答)
• ) increase speed • ) decrease speed • ) change direction
#9
正面 (问题)
an object’s change in position over time as compared to a reference point
背面 (解答)
motion