栏目导引,考点扫描,重难突破,模拟演练,能力提升,达标诊断,高效训练,第五章机械能,第五章机械能,1/55,路径,高度差,机械能,2/55,减小,增大,等于,减小,E,p,无关,3/55,弹性形变,越大,越大,E,p,4/55,5/55,6/55,7/55,8/55,9/55,10/55,11/55,12/55,动能,势能,弹性势能,重力势能,弹力,保持不变,零,13/55,14/55,15/55,16/55,17/55,18/55,19/55,20/55,21/55,22/55,23/55,24/55,25/55,26/55,27/55,28/55,29/55,30/55,31/55,32/55,33/55,34/55,35/55,36/55,37/55,38/55,39/55,40/55,41/55,42/55,43/55,44/55,45/55,46/55,47/55,48/55,49/55,50/55,51/55,52/55,53/55,54/55,55/55,