Physics, asked by nazimulhasan2112, 1 year ago

a body travels at uniform speed of 3 m/sor 20 sec,thenit stops for 10 sec and then travels at uniform speed of 2 m/s for 30 sec.its average speed during he motion

Answers

Answered by AdithyaMahesh17
4

Answer:

2 m/s

Explanation:

Average Speed = Total Distance/Total Time

Distance = Speed × Time

= 3 × 20 + 0 × 10 + 2 × 30

= 60 + 0 + 60

= 120 m

Total Distance = 120 m

Total time = 20 + 10 + 30 = 60 s

Average Speed = 120/60

= 2 m/s

Answered by wish1987
0

Answer:

Explanation:

1 st case -

Speed of the body = 3m/sec

Time taken = 20 sec

Distance covered = speed * time

= (3 * 20)km

= 60 km

2 nd case -

Speed of the body = 2m/sec

Time taken = 30 sec

Distance = speed * time

= (2 * 30)km

= 60 km

Average speed = Total Distance

Total Time

= 60 + 60 m

20+50 sec

= 120 m

70 s

= 1.71 m/sec

= 2 m/sec (App.)

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