The average velocity is defined as the ratio of total displacement to total time.
Va=1/2 ( V0+V)
Initial Velocity :
V0 = 2*Va-v .
v = 2*Va- V0
State the equation you plan to use and plug in the values.
If a body has an initial velocity of 2 m/s and at the end of 5 seconds from the instant the initial velocity is noted, its velocity is 10 m/s, find the average velocity of the body.
Initial velocity (V0) = 2 m/s
Velocity (v) = 10 m/s
Average velocity (Va) = ?
Plug the value in the formula.
Va=1/2 ( V0+V) .
Va= 1/2 (10 + 2).
Va= 6 m/s
If a particle moves along a straight line distance of 29 m in time of 5 sec and a distance 55m in time of 14 sec.Calculate the average velocity of a particle.
Particle moves in a straight line, when t = 5 sec
Then the distance of the particle is s = 29 m
Next it will be moving in the straight line, when t = 14 sec
Then the particle is moved to the distance of 55 m
To calculate the average velocity of a particle, we use this formula
Va= Total displacement / Total time.
Total displacement =Δs where Δs =( r2-r1 ), r2 = 55 , r1=29
Total time = Δt where Δt = ( t2-t1 ), t2 = 14 , t1= 5 ,
Va = Δs / Δt = ( r2-r1 ) / ( t2-t1 )
Va = (55-29) / (14-5) .
Va = 26/9 .
Va = 2.89 m/s