关于jumperyoucanjumponly的百科

• 　　Evenifyouareagoodhigh-jumper,youcanjumponlyaboutseven...

• 问题详情：Evenifyouareagoodhigh-jumper,youcanjumponlyaboutsevenfeetofftheground.Youcannotjumpanyhigherbecausetheearthpullsyouhard.Thepulloftheearthiscalledgravity.Youcaneasilyfindoutthepulloftheearth.Ifyouweighyourself,youwillknowhowmuchgravityispullin...
• 2019-08-1626746