1) which forces does this train have to overcome to reach its maximum speed? a) electricity,friction and resistance b) tension,spring and friction c) gravitational,magnetic and normal force d) friction,air resistance and gravitational 2) Immediately after this picture, the balloon will be able to exert which force? a) Gravity b) friction c) electrical d) spring 3) Wil E. Coyote is using what force to move? a) friction b) spring c) magnetism d) electrical 4) These skydivers are experiencing what two forces? a) electricity and magnetism b) air resistance and gravity c) gravity and tension d) gravity and normal force 5) which force will make Wil E. Coyote slow down? a) friction b) gravity c) air resistnace d) electricity

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?