[填空题]
Two bumper cars in an a bsp+nb;cczs ,, m5lj1musement park ride collide elask )urfb.d h/hwqwk1qq6 9d 4s3tically as one approaches the other directly from the rear (Fig. 7–34). Car A has a mass of 450 kg and car B 550 kg, owing to differences in passenger mass. If car A approaches aq .kb)3fsdkq9ww rqu4/1 6dhht 4.5m/s and car B is moving at 3.7m/s calculate
(a) their velocities after the collision v'$_A$ = m/s v'$_B$ = m/s
(b) the change in momentum of each.$\Delta p_{\mathrm{A}}$$\approx$ kg*m/s $\Delta p_{\mathrm{B}}$$\approx$ kg*m/s
