£¨1£©´øµçÀë×ÓÔÚƽÐаåa¡¢bÖ®¼äÔ˶¯Ê±£¬Óɶ¯Äܶ¨Àí£¬qU
0=
mv
2½âµÃ£ºv=
£¬
¼´£ºv=
¡¢Ù
´øµçÀë×ÓÔÚƽÐаåa¡¢bÖ®¼äµÄ¼ÓËٶȣºa
1=
£¬
¼´£ºa
1=
£®
ËùÒÔ´øµçÀë×ÓÔÚƽÐаåa¡¢bÖ®¼äµÄÔ˶¯Ê±¼ä£ºt
1=
=
£®
´øµçÀë×ÓÔÚƽÐаåM¡¢NÖ®¼äµÄÔ˶¯Ê±¼ä£ºt
2=
=
£®£¬
ËùÒÔ´øµçÀë×Ó´Óa°åµ½Ì½²âÆ÷µÄ·ÉÐÐʱ¼äΪ£ºt=t
1+t
2=
£®
£¨2£©´øµçÀë×ÓÔÚƽÐаåM¡¢NÖ®¼äˮƽλÒÆΪxʱ£¬ÔÚÊúÖ±·½ÏòλÒÆΪy£¬
ˮƽ·½ÏòÂú×㣺x=vt£¬
ÊúÖ±·½ÏòÂú×㣺y=
a
2t
2£¬a
2=
ÁªÁ¢½âµÃ£ºy=
¡¢Ú
¢ÚʽÊÇÕýÀë×ӵĹ켣·½³Ì£¬ÓëÕýÀë×ÓµÄÖÊÁ¿ºÍµçºÉÁ¿¾ùÎÞ¹Øϵ£¬ËùÒÔ²»Í¬ÕýÀë×ӵĹ켣ÊÇÖغϵģ®
£¨3£©µ±MN¼äµÄ´Å¸ÐӦǿ¶È´óСΪBʱ£¬Àë×Ó×öÔ²ÖÜÔ˶¯£¬Âú×ãqvB=
¡¢Û
ÓÉ¢Ù¢ÛÁ½Ê½½âµÃ´øµçÀë×ӵĹìµÀ°ë¾¶R=
¡¢Ü
ÉÏʽ±íÃ÷£ºÔÚÀë×ÓÖÊÁ¿Ò»¶¨µÄÇé¿öÏ£¬Àë×ӵĵçºÉÁ¿Ô½´ó£¬Ôڴų¡ÖÐ×öÔ²ÖÜÔ˶¯µÄ°ë¾¶Ô½Ð¡£¬Ò²¾ÍÔ½²»ÈÝÒ×´©¹ý·½ÐÎÇø´ÓÓÒ²à·É³ö£®ËùÒÔ£¬ÒªÊ¹ËùÓеÄÒ»¼ÛºÍ¶þ¼ÛÕýÀë×Ó¾ùÄÜͨ¹ý·½ÐÎÇø´ÓÓÒ²à·É³ö£¬Ö»Òª¶þ¼ÛÕýÀë×ÓÄÜ´Ó·½ÐÎÇø·É³ö¼´¿É£®µ±¶þ¼ÛÕýÀë×Ó¸ÕºÃÄÜ´Ó·½ÐÎÇø¸ÕºÃÄÜ´Ó·½ÐÎÇøÓò·É³öʱµÄ´Å¸ÐӦǿ¶ÈΪÂú×ãÌâÄ¿Ìõ¼þµÄ´Å¸ÐӦǿ¶ÈµÄ×î´óÖµ£®
Éèµ±Àë×Ó¸ÕºÃͨ¹ý·½ÐÎÇø´ÓÓÒ²à·É³öʱµÄ¹ìµÀ°ë¾¶ÎªR£¬Óɼ¸ºÎ¹ØϵµÃ£º
R
2=L
2+£¨R-
£©
2½âµÃ£ºR=
L¡¢Ý
½«¶þ¼ÛÕýÀë×ӵĵçºÉÁ¿2e´úÈˢܵã¬R=
¡¢Þ
ÓɢݢÞʽµÃ£ºB=
£®
´ËÖµ¼´ÎªËùÇóµÄËù¼Ó´Å³¡µÄ´Å¸ÐӦǿ¶ÈµÄ×î´óÖµB
m£®
´ð£º£¨1£©Àë×Ó´Óa°åµ½Ì½²âÆ÷µÄ·ÉÐÐʱ¼ätÊÇ
£¬
£¨2£©ÈôÔÚM¡¢N¼äÖ»¼ÓÉÏƫתµçѹU
1£¬ÕýÀë×ӵĹ켣·½³Ì£¬ÓëÕýÀë×ÓµÄÖÊÁ¿ºÍµçºÉÁ¿¾ùÎÞ¹Øϵ£¬ËùÒÔ²»Í¬ÕýÀë×ӵĹ켣ÊÇÖغϵģ®£»
£¨3£©ÒªÊ¹ËùÓÐÕýÀë×Ó¾ùÄÜͨ¹ý·½ÐÎÇøÓò´ÓÓÒ²à·É³ö£¬Ëù¼Ó´Å³¡µÄ´Å¸ÐӦǿ¶ÈµÄ×î´óÖµÊÇ
£®