Question

if man walks 7km in 2 hours and then 2 km in 1 hours what is the average speed and velocity?​

Answer 1

Answer:

Average Speed = Average velocity = 3km/hr

Explanation:

Average Speed = Total distance ÷ Total time

                           = 9  ÷ 3 = 3km/hr

The average velocity should also be the same provided that the man is walking in a straight line with no change in direction.

Answer 2

Answer:

Average speed and velocity is both are 3km/hr.

GIVEN :

• A man walks 7 km in 2 hrs and later he walks 2 km in 1 hour.

TO FIND :

• Average speed and Average velocity.

FORMULA :

• Speed = $\sf {\dfrac {Total \: Distance}{total \: time}}$

• Velocity = $\sf {\dfrac {Total \: Distance}{total \: time}}$

SOLUTION :

• Total distance travelled by man = 7 km + 2 km = 9 km.

• Total time taken = 2 hr + 1 hr = 3 hrs.

Average speed = 9/3 = 3 km/hr.

$\therefore$ Average velocity = Average speed = 3 km/hr.

◾Average speed = 3 km/hr.

◾Average velocity = 3 km/hr.