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in Physics by (57.4k points)

The graph given alongside shows how the speed of a car changes with time:

(i) What is the initial speed of the car ? 

(ii) What is the maximum speed attained by the car ? 

(iii) Which part of the graph shows zero acceleration ? 

(iv) Which part of the graph shows varying retardation ? 

(v) Find the distance travelled in first 8 hours.

1 Answer

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Best answer

(i) Initial speed of the car=10km/h

(ii) Maximum speed attained by the car= 35km/h

(iii) BC represents zero acceleration.

(iv) CD represents varying retardation.

(v)

Distance travelled in first 8 hrs:

s= Area of trapezium OABF + Area of rectangle BCEF

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