Question

d= KM TU = 30 min ta = 2 min V = d t V = d V2 = d tr = kam = 2 min​

Answer 1

Răspuns:

Velocity for one third of distance V

1

=20km/h

Velocity for two third of distance V

2

=60km/h

Time take to cover one third of distance t

1

=

V

1

d/3

=

20

d/3

Time taken to cover two third of distance t

2

=

V

2

2d/3

=

60

2d/3

Average velocity =

totaltime

Totaldistance

V

av

=

t

1

+t

2

d

=

20

d/3

+

60

2d/3

d

=36km/h Velocity for one third of distance V

1

=20km/h

Velocity for two third of distance V

2

=60km/h

Time take to cover one third of distance t

1

=

V

1

d/3

=

20

d/3

Time taken to cover two third of distance t

2

=

V

2

2d/3

=

60

2d/3

Average velocity =

totaltime

Totaldistance

V

av

=

t

1

+t

2

d

=

20

d/3

+

60

2d/3

d

=36km/h