Question

the graph given alongside show how the speed of the car changes with time.
a)what is the initial speed of car.
b)what is the maximum speed attained by car.
c)which part of graph shows zero acceleration.
d)which part of graph shows varying retardation.
e)find the distance travelled in first 8 hours.

Answer 1

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

Answer:

(a) u=10km/hr

(b) 35 kilometre per hour

(c) the part b to c shows acceleration

(D) the part from c to D shows retardation