1、 2015-2016 12 4 48 1-9 10-12 4 2 0 1 A 2 y y y t A t=0 0 B 0 t 1 y C 0 t 2 D t 1 t 3 O 3 O x= 10 0.1v 2 m A 10 m/s 2B 5s C 0 10m/s D 5m 4 m a m m A B C D 5 v t Oa ab bc ab A 0 t 1 B t 1 t 2 C t 1 t 2 mv 2 2 mv 1 2D t 1 t 2 t 3 6 8km/s 2 8 A 2km/s B 4km/s C 16km/s D 32km/s 7 +q 2d Q b a A B C D 8 A B
2、 A B v t 9 a b A a b B a C a b D a b 10 “ ” 90 A a a a B v v v C T =24h = D T r 11 A B A B A a v B A F f x 12 m v 1 v v 1 v A m v 1 2 v 2 B C mv 2 v 1 v D 2 6 12 13 3 14 2 13 10Hz 5 x 1 x 2 x 3 x 4 h s g=9.80m/s 2 cm x 1x 2x 3x 4h S 10.76 15.05 19.34 23.65 48.00 80.00 1 a= m/s 2 3 2 14 1 A B C D A B
3、 2 A B 3 A B C D 3 15 16 13 17 14 40 . 15 13 2015 m=1.5kg F=15N 0.5s =0.2 g 10m/s 2 1 2 3 16 13 2014 AB L O m O AB 2L C O A L 1 H 2 3 E p 17 14 2008 A B l d B A +U g A B B t A U 1 0 2 A t 2015-2016 12 4 48 1-9 10-12 4 2 0 1 A D mgsin+mgcos=ma a =gsin+gcos mgsin mgcos=ma a =gsin gcos a a AB C C 2 y y
4、 y t A t=0 0 B 0 t 1 y C 0 t 2 D t 1 t 3 O AB 0 t 1 y t=0 0 0 t 1 y AB C 0 t 2 C D t 1 t 3 O D C 3 O x= 10 0.1v 2 m A 10 m/s 2B 5s C 0 10m/s D 5m x= 10 0.1t 2 m AC x= 10 0.1v 2 m = 0.1v 2 =10 a= 5m/s 2 v 0 =10m/s A C B t 0 = = =2s B D x 0 = t 0 = 2=10m D C v=v 0 +at 4 m a m m A B C D A B F N F f W=F
5、Scos A W=FScos 90 A B F f a gtan F f a gtan a=gtan AC B ACD 5 v t Oa ab bc ab A 0 t 1 B t 1 t 2 C t 1 t 2 mv 2 2 mv 1 2D t 1 t 2 t 3 P P=Fv v F A 0 t 1 P=Fv A B t 1 t 2 B C t 1 t 2 C D 0 t 1 t 1 t 2 t 3 D D 6 8km/s 2 8 A 2km/s B 4km/s C 16km/s D 32km/s 8km/s v= M 6M r 1.5r = v= v = v = v = v =4km/s B ACD B 7 +q 2d Q b a A B C D b +q b +q b E=k b a +q a E=k a +q b E=k b +q b b E=k
