Question

A person travels along a straight road for the first half time with a velocity v1, and the next half time with a velocity v2. The mean velocity V of the man is

Answer 1

Answer:

For the first half time=t, velocity=v

1

, distance=s

1

=v

1

t

For the second half time=t, velocity=v

2

, distance=s

2

=v

2

t

Mean velocity =

t+t

s

1

+s

2

=

2t

v

1

t+v

2

t

=

2

v

1

+v

2