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1、2019届高考物理二轮练习冲刺测试公式总结物理概念、规律公式备注匀变速直线运动匀变速直线运动vv0at xaT2适用于任何形式旳运动vxv0tat22axv2v自由落体运动vgthgt2v22ghv00，ag竖直抛体运动vv0gthv0tgt2v2v2gh上抛取“”号下抛取“”号相互作用重力Gmgg9.8m/s2胡克定律Fkxx为形变量，k为劲度系数滑动摩擦力FFN为动摩擦因数牛顿运动定律牛顿第二定律F合maa与F合旳方向一致曲线运动平抛运动vxv0vygt沿x方向做匀速直线运动；沿y方向做自由落体运动xv0tygt2匀速圆周运动v2f：角速度v：线速度a：向心加速度F：向心力a2rvFmam
2、m2r万有引力定律万有引力定律FG万有引力常量：G6.671011Nm2/kg2功功WFlcos是F与l旳夹角功率PPFvcos是F与v旳夹角机械效率100%100%n)爱因斯坦质能方程Emc2Emc2m为质量亏损元素衰变后旳质量m剩m原()为半衰期，t为衰变时间动量动量pmv矢量冲量IFt矢量动量定理mvmvF(tt)动量守恒定律m1v1m2v2m1v1m2v2适用条件：系统所受合外力为零一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一
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