ݷʱ : 2024/12/25 13:35:24һ µȫĶ
14. ͼʾһɵ綯Ƥֵİ뾶ǵ綯Ƥְ뾶3Ƥ֮䲻֪ƤֱԵһļٶΪ
1綯ƤƤֵתٱ=__________
2AλڻƤְ뾶е㣬Aļٶ_________
15. ̫ת뾶ΪrתΪTΪG̫Բ˶̫M=____________
16. ͼʾоƽ˶ʵУһӡСֽ¼켣Сı߳L=5.00cmС˶еļλͼеabcdʾСƽijٶb
__________
__________m/sС
ġ⣺ʱдҪ˵ʽҪ㲽衣ֻд𰸵IJܵ÷ֵ֣⣬бȷдֵ͵λ
17. ˶Ա500g߳ij˹۲ڿеķʱ䣬߶10m
ٶΪ20m/s˶ԱʱĹԼߵʱ˲ʱʡԿ
18. деغ㶨ݵֱһ֤öɵʵ飬ҪдʵʵļҪʵ鲽衣
19. ijͬѧԲ̽Բ˶ĿʵУѲ쳤̶ֱֹ⻬ԲʹܣʹܳΪl˨ֱΪ4m5mСAСBʼʵʱСAʹͣڱʹܵ¶ˣʱBʹܵ¶˾Ϊlʹܵ¶˵ˮƽľΪ10lСAʹֱһнǣСAʵˮƽٶȣʹˮƽԲ˶Bλ=0.8cos53=0.6 ñֲ䣬֪ٶΪgsin53
1ֱнǦȺСAԲ˶Ľٶȣ
2СA1Բ˶ʱСAһص㵽Bصľs 3ijͬѧʼʵʱϻζʹܣʹСABƣBʹ·ijλãϵͳȶСˮƽԲ˶ĽٶΪ˹˶ABɵϵͳW