a particle moves towards east from A to B at the rate of 4km/hr and then towards north from B to C at the rate of 5km/hr. Finally it reaches A. If AB=12km and BC=10km.Find the average velocity of the particle for the whole journey.
Answers
Answer:
Average velocity of the particle for the whole journey=7.078
Answer:
The average velocity of the particle for whole journey is 0.
Explanation:
Given that,
A particle moves towards east from A to B at the rate of 4 km/hr and then towards north from B to C at the rate of 5 km/hr.
Distance of AB = 12 km
Distance of BC = 10 km
We need to calculate the time ,
The time is equal to the distance divided by the velocity.
Time to covered the distance A to B is ,
Time to covered the distance B to C is ,
The total time is 5 sec.
The distance AC is
Using Pythagorean theorem,
A particle starts from point A and finally reach at point A then the displacement is zero.
The average velocity is defined as,
Where, D = Displacement
T = Total time
Hence, The average velocity of the particle for whole journey is 0.