Which of the following is a correct measure of velocity?
30 m/s, South
30 m/s
30 s
30 South
30 m/s, South is a measure of velocity. 30 s is a measure of time. 30 South is unitless and hence incomplete. 30 m/s is a measure of speed.
Rain is falling vertically with a speed of 30ms−1. A woman rides a bicycle with a speed of 10ms−1 in the north to south direction. What is the direction in which she should hold her umbrella ?
A block of mass 30 kg is resting on a smooth surface. Forces of 600 N and 300 N act in north and south direction respectively. The magnitude and direction of acceleration of the block is