Science, asked by aasa7232, 5 hours ago

a dog ran 100 m in 20 sec he then comes bck half the distance in 10 sec and stops what is the dogs average velocity

Answers

Answered by jeemitvpandya
0

Answer:

Given,

In first event, displacement S=200m in time t

1

=25sec

In second event, displacement S=−100m in time t

1

=15sec

Average velocity=

total time

Total displacement

=

t

1

+t

2

S+(−S)

=

25+15

200+(−100)

=2.5ms

−1

Average speed=

total time

Total distance

=

t

1

+t

2

S+S

=

25+15

200+100

=10ms

−1

Hence, Average velocity 2.5ms

−1

and average speed is 10ms

−1

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