Question

a person covers 20m in 5 seconds and the next 20 min 10 second along north.calculate the average speed and average of velocity.
2. A car travels at a speed of 40 km/hr for 10min, then at 55 km/hr for 20 min and finally at20 km/hr for 20min .What is the average speed of the car?​

Answer 1

Answer:

1.Average speed = total distance covered / total time time taken

20➕20/10+5

40/15

8/3

2.667 m/s

Average velocity = total displacement/ total time taken

20 ➕ 20/ 10+5

40/15

8/3

2.667 m/s towards north