Usha swims in a 90 metre long pool she covers 18 metre in 1 minute by swimming from one end to the other and back along the same straight path find the average speed and average velocity of usha
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average speed= total distance covered/total time taken
180m/1min * 1min/60 sec
180m/60s= 3ms-1
average velocity= displacement/ total time taken
(a.t.q she is back at starting point so displacement is 0)
0/60s= 0 ms-1
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