Question

40. A particle moves along a straight line with speed
20 m/s for one hour and then with 40 m/s for next
one hour. Average speed during the total journey is
(2) 30 m/s
(1) 26.67 m/s
(3) 22.67 m/s
(4) 24 m/s​

Answer 1

Answer:

Speed 1= 20m/s

Speed 2 = 40m/z

Average speed= total speed / no. Of speeds

20+40/2 = 60/2

30m/s....

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