Yog li, Kab rov tav ntawm qhov nrawm tseem nyob tas li rau qhov projectile raug rho tawm hauv ntiaj teb.
Qhov twg hauv qab no yog qhov tsis tu ncua ntawm qhov projectile?
Teb: Kab rov tav Cheebtsam ntawm cov lus tsa suab yog qhov tas li.
Yuav ua li cas zoo ib yam rau qhov projectile?
Qhov kawg kab rov tav tshaj tawm ntawm qhov projectile yog ib txwm sib npaug rau thawj zaug kab rov tav. Raws li qhov projectile nce mus rau qhov siab tshaj plaws ntawm nws txoj kev sib tw, txoj kab rov tav yuav txo qis; Raws li nws ntog los ntawm qhov siab tshaj ntawm nws txoj kev taug, nws txoj kab rov tav yuav txo qis.
Thaum qhov projectile nce mus dab tsi txo?
Ua ntej cov khoom nce mus txog qhov siab tshaj plaws, ntsug nrawm v y v_y vvv, pib subscript, y, kawg subscript of ib qhov projectile txo, vim acceleration yog nyob rau hauv lub opposite direction. Kev taw qhia ntawm qhov nrawm yog pib nce, txij li qhov khoom qhov siab nce ntxiv (saib daim duab 3 hauv qab).
Dab tsi yog qhov nrawm ntawm qhov projectile thaum nws mus txog qhov siab tshaj plaws?
Ntawm qhov projectile siab tshaj plaws, nws acceleration yog zero.