4. Calculate the value of acceleration due to gravity on the surface of moon. Mass of the moon = 7.4 ×1022 and radius of moon = 1.75 × 106 G = 6.67 × 10–11 (2)
6. An athlete completes one round of circular track of diameter 200 m in 40 sec. What is will be the distance covered and the displacement at of 2 min 20 sec. (4)