Question

find the average speed and velocity of an object while travelling from point A to B of 80m long in 1 min and then retract its path to point C of 30m in another 40sec​

Answer 1

Explanation:

A-------------C-----------B

• Distance covered from A to B = 80m
• Time taken = 1min = 60 sec

Now,

• Distance covered from B to C = 30m
• Time taken = 40 sec

Now,

• Total distance = 80 + 30 = 110m
• Total displacement = 80 - 30 =50m
• Total time taken = 60+40 = 100sec

• Average speed = Total distance/Total time =110/100 = 1.1 m/sec
• Average velocity = Total displacement/Total time = 50/100 =1/2 =0.5m/sec.