Chapter 3 - Motion in Two Dimensions - Learning Path Questions and Exercises - Exercises - Page 101: 81

a). $-125km/hr$ b). $3.5m/s^{2}$ North c). $3.5m/s^{2}$ North

a). The relative speed is $=-75km/hr-50km/hr=-125km/hr$ b). $v=u+at$ or, $0=-75km/hr+a\times6s$ $a=75\times\frac{1000}{3600}\times\frac{1}{6} m/s^{2}$ $a=3.5m/s^{2}$ North c). $-50km/hr=125km/hr+a\times6s$ $a=3.5m/s^{2}$ North