How do you calculate the average velocity of a moving object? (full formula required)?

Question

It has to be the full calculation...it's a physics problem....yuk lol. Anyway, someone please help!

Thanks....

Answer 1

You must divide displacement to the time it took.

If I walk 20 meters in 5 seconds and then 30 meters in 7 seconds then my average velocity is (20+30)/(5+7)=4.166667 meter per second

Answer 2

Average velocity = Total displacement/Total time

                                = r2-r1/(t2-t1)

where r1 & r2 are position vectors at time t2 & t1 respectively.

Answer 3

change in velocity divided by time.V2-V1/t.v2 is the final velocity.v1 is the initial velocity...and t is the time.if body starts 4m rest then v1=0.if body comes 2 rest(retardation)..ans will be i negative.ie v2=0

Answer 4

That depends on what you start with.  In the simplest case, if you have the total distance traveled and the total time, then the average velocity is total distance divided by total time.

If you are given a problem with several segments of different velocities and you have either the time or distance traveled at each of those velocities, for each segment calculate the distance (if you are given time) or time (if you are given distance).  Add up all the times and distances and divide the sum as above.

If you a given velocity as a continuous function of time V(t), and you want the average velocity in the interval T1 to T2:  the distance covered from time T1 to T2 is ∫[T1 to T2]*V(t)*dt and the average velocity is [1/(T2 - T1)]* ∫[T1 to T2]*V(t)*dt