Question

10. 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. (open the graph) pla answer

Answer 1

Explanation:

A)10km/h

b) 35km/h

c)the part from B to C shows zero acceleration.

d) the part from C to D shows retardation.

e) distance travelled in first 8 hours=

(Area of triangle) + ( area of rectange)

= [1/2 ×(35-10) × 3] + (35)(8-3)

= 37.5 + 175 =212.5 km

Answer 2

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A)10km/h

b) 35km/h

c)the part from B to C shows zero acceleration.

d) the part from C to D shows retardation.

e) distance travelled in first 8 hours=

(Area of triangle) + ( area of rectange)

= [1/2 ×(35-10) × 3] + (35)(8-3)

= 37.5 + 175 =212.5 km

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