Question

Q1.a cyclist moving on a straight road covers a. distance 6km with speed 4m/s and 4km with speed 2.5m/s the average speed of cyclist is​

Answer 1

Step-by-step explanation:

SOLUTION

GIVEN

A cyclist moving on a straight road covers a distance 6km with speed 4m/s and 4km with speed 2.5m/s

TO DETERMINE

The average speed of cyclist

EVALUATION

Here it is given that a cyclist moving on a straight road covers a. distance 6km with speed 4m/s and 4km with speed 2.5m/s

For distance of 6 km :

Speed = 4 m/s

Distance covered = 6 km = 6000 m

Time taken

=6000/4 sec

=1500sec

For distance of 4 km :

Speed = 2.5 m/s

Distance covered = 4 km = 4000 m

Time taken

=

4000/2.5 sec

=1600sec

Calculation of average speed :

Total distance covered

= 6 km + 4 km

= ( 6000 + 4000 ) m

= 10000 m

Total time taken

= ( 1500 + 1600 ) sec

= 3100 sec

Hence the required average speed

Totaldistancecovered/Totaltimetaken

=10000/3100

=3.23 m/s (approx)

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